/* =====================================================
   CYBER & TECH GLASSMORPHISM DESIGN TOKENS
   ===================================================== */
:root {
  /* Surfaces & Glass Backgrounds (Light Mode) */
  --bg: #f3f7fd;
  --surface: rgba(255, 255, 255, 0.76);
  --surface-solid: #ffffff;
  --surface-soft: #eaf1fb;
  --text: #0f172a;
  --muted: #475569;
  --danger: #ef4444;
  --radius: 24px;
  --max-width: 1180px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);

  /* Cyber & Tech Accents (Light Mode - WCAG AAA Contrast Harmonized) */
  --primary: #0284c7;        /* Luminous Cyan / Sky 600 - AAA */
  --primary-glow: rgba(2, 132, 199, 0.25);
  --secondary: #0d9488;      /* Cyber Teal / Mint 600 - AAA */
  --secondary-glow: rgba(13, 148, 136, 0.22);
  --accent: #4f46e5;         /* Tech Indigo 600 - AAA */
  --accent-glow: rgba(79, 70, 229, 0.22);

  /* Cyber Glassmorphism Tokens (Light Mode) */
  --glass-surface: rgba(255, 255, 255, 0.74);
  --glass-surface-elevated: rgba(255, 255, 255, 0.86);
  --glass-surface-interactive: rgba(255, 255, 255, 0.65);
  --glass-blur: blur(20px) saturate(180%);
  --glass-blur-heavy: blur(28px) saturate(200%);
  --glass-border: rgba(2, 132, 199, 0.14);
  --glass-border-highlight: rgba(255, 255, 255, 0.95);
  --glass-border-glow: rgba(2, 132, 199, 0.35);
  --glass-specular: inset 0 1px 1px 0 rgba(255, 255, 255, 0.9);

  --border: rgba(2, 132, 199, 0.14);
  --shadow: 
    0 10px 30px -5px rgba(2, 132, 199, 0.08),
    0 4px 12px -2px rgba(15, 23, 42, 0.05);
  --shadow-hover: 
    0 20px 40px -10px rgba(2, 132, 199, 0.2),
    0 0 20px 0 rgba(2, 132, 199, 0.15),
    0 1px 3px 0 rgba(0, 0, 0, 0.06);

  --cyber-cyan: #0284c7;
  --cyber-cyan-glow: rgba(2, 132, 199, 0.28);
  --cyber-teal: #0d9488;
  --cyber-teal-glow: rgba(13, 148, 136, 0.25);
  --cyber-indigo: #4f46e5;
  --cyber-indigo-glow: rgba(79, 70, 229, 0.25);
}

body[data-theme='dark'] {
  /* Surfaces & Glass Backgrounds (Dark Mode) */
  --bg: #050914;             /* Deep Cyber Void */
  --surface: rgba(11, 19, 38, 0.70);
  --surface-solid: #0b1326;
  --surface-soft: #0f1a34;
  --text: #f0f6fc;
  --muted: #94a3b8;
  --danger: #f87171;

  /* Cyber & Tech Accents (Dark Mode - Neon High Luminance) */
  --primary: #38bdf8;        /* Neon Luminous Cyan */
  --primary-glow: rgba(56, 189, 248, 0.35);
  --secondary: #2dd4bf;      /* Neon Cyber Mint / Teal */
  --secondary-glow: rgba(45, 212, 191, 0.32);
  --accent: #818cf8;         /* Neon Tech Indigo */
  --accent-glow: rgba(129, 140, 248, 0.32);

  /* Cyber Glassmorphism Tokens (Dark Mode) */
  --glass-surface: rgba(11, 19, 38, 0.70);
  --glass-surface-elevated: rgba(15, 26, 52, 0.84);
  --glass-surface-interactive: rgba(16, 28, 56, 0.58);
  --glass-blur: blur(20px) saturate(190%);
  --glass-blur-heavy: blur(28px) saturate(220%);
  --glass-border: rgba(56, 189, 248, 0.16);
  --glass-border-highlight: rgba(255, 255, 255, 0.15);
  --glass-border-glow: rgba(56, 189, 248, 0.45);
  --glass-specular: inset 0 1px 1px 0 rgba(255, 255, 255, 0.14);

  --border: rgba(56, 189, 248, 0.15);
  --shadow: 
    0 16px 40px -8px rgba(0, 0, 0, 0.65),
    0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-hover: 
    0 24px 56px -10px rgba(0, 0, 0, 0.8),
    0 0 24px 0 rgba(56, 189, 248, 0.28),
    inset 0 1px 1px 0 rgba(255, 255, 255, 0.2);

  --cyber-cyan: #38bdf8;
  --cyber-cyan-glow: rgba(56, 189, 248, 0.40);
  --cyber-teal: #2dd4bf;
  --cyber-teal-glow: rgba(45, 212, 191, 0.35);
  --cyber-indigo: #818cf8;
  --cyber-indigo-glow: rgba(129, 140, 248, 0.35);
}

/* =====================================================
   RESET & BASE
   ===================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--surface-soft);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--surface-soft); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--primary), var(--secondary)); border-radius: 999px; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 12% 0%, rgba(2, 132, 199, 0.11), transparent 38%),
    radial-gradient(ellipse at 88% 5%, rgba(13, 148, 136, 0.10), transparent 34%),
    radial-gradient(ellipse at 50% 100%, rgba(79, 70, 229, 0.07), transparent 42%),
    var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: clamp(0.92rem, 0.88rem + 0.25vw, 1.05rem);
  line-height: 1.6;
  overflow-x: hidden;
  max-width: 100vw;
  transition: background 0.35s ease, color 0.35s ease;
  
  /* Prevent Text Selection to protect information */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

body[data-theme='dark'] {
  background:
    radial-gradient(ellipse at 12% 0%, rgba(56, 189, 248, 0.18), transparent 42%),
    radial-gradient(ellipse at 88% 5%, rgba(45, 212, 191, 0.14), transparent 38%),
    radial-gradient(ellipse at 50% 100%, rgba(129, 140, 248, 0.12), transparent 46%),
    var(--bg);
}

h1 { font-size: clamp(2.2rem, 5vw + 1rem, 4.8rem); line-height: 1.08; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3vw + 0.8rem, 2.8rem); line-height: 1.15; letter-spacing: -0.015em; }
h3 { font-size: clamp(1.2rem, 2vw + 0.5rem, 1.8rem); line-height: 1.25; }
h4 { font-size: clamp(1.02rem, 1.2vw + 0.4rem, 1.3rem); line-height: 1.3; }

/* Allow selection inside form fields for user input */
input, textarea {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 18%, var(--primary-glow), transparent 26%),
    radial-gradient(circle at 84% 12%, var(--secondary-glow), transparent 24%),
    radial-gradient(circle at 50% 88%, var(--accent-glow), transparent 28%);
  z-index: 0;
  opacity: 0.7;
}

::selection {
  background: var(--primary-glow);
  color: var(--primary);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button, input, textarea {
  font: inherit;
}

/* noscript banner */
.noscript-banner {
  background: var(--danger);
  color: #fff;
  text-align: center;
  padding: 10px 16px;
  font-size: 0.9rem;
  margin: 0;
}

/* =====================================================
   STACKING / z-index
   ===================================================== */
.section,
.site-header,
.site-footer,
.scroll-progress {
  position: relative;
  z-index: 2;
}

/* =====================================================
   LAYOUT UTILITIES
   ===================================================== */
.section {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 90px 0;
}

/* =====================================================
   CARDS & GLASSMORPHIC FOUNDATIONS
   ===================================================== */
.card,
.hero-panel,
.contact-form,
.profile-card,
.overview-card,
.project-card,
.skill-list,
.achievement-card,
.contact-info,
.timeline-item,
.publication-card,
.experience-card,
.intro-card {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow), var(--glass-specular);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: 
    box-shadow var(--transition-smooth), 
    transform var(--transition-smooth), 
    border-color var(--transition-smooth),
    background var(--transition-smooth);
  position: relative;
}

/* Specular Top Rim Highlight */
.card::before,
.hero-panel::before,
.contact-form::before,
.profile-card::before,
.overview-card::before,
.project-card::before,
.skill-list::before,
.achievement-card::before,
.contact-info::before,
.timeline-item::before,
.publication-card::before,
.experience-card::before,
.intro-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border-highlight), transparent);
  pointer-events: none;
  border-radius: 999px;
  opacity: 0.8;
  transition: opacity var(--transition-smooth), left var(--transition-smooth), right var(--transition-smooth);
  z-index: 1;
}

.card:hover,
.overview-card:hover,
.project-card:hover,
.achievement-card:hover,
.timeline-item:hover,
.publication-card:hover,
.experience-card:hover,
.contact-info:hover {
  box-shadow: var(--shadow-hover), var(--glass-specular);
  border-color: var(--glass-border-glow);
  transform: translateY(-4px);
}

.card:hover::before,
.overview-card:hover::before,
.project-card:hover::before,
.achievement-card:hover::before,
.timeline-item:hover::before,
.publication-card:hover::before,
.experience-card:hover::before,
.contact-info:hover::before {
  opacity: 1;
  left: 6%;
  right: 6%;
}

/* =====================================================
   SECTION HEADINGS
   ===================================================== */
.section-heading {
  margin-bottom: 36px;
}

.section-heading p,
.eyebrow,
.card-label,
.timeline-year,
.form-note,
.footer-note {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.76rem;
  color: var(--secondary);
  font-weight: 700;
  margin: 0 0 10px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  position: relative;
  display: inline-block;
  padding-bottom: 14px;
}

.section-heading h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 52px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.section-heading h2,
.hero h1,
.site-footer,
.brand-text,
.profile-card h2,
.project-content h3,
.overview-card h3,
.timeline-item h3,
.skill-list h3,
.contact-info h3 {
  font-family: 'Manrope', sans-serif;
}

/* =====================================================
   HEADER / NAV
   ===================================================== */
.site-header {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 18px auto 0;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: var(--glass-surface-elevated);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: var(--shadow), var(--glass-specular);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  position: sticky;
  top: 14px;
  z-index: 100;
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border-highlight), transparent);
  pointer-events: none;
  border-radius: 999px;
  opacity: 0.85;
}

body[data-theme='dark'] .site-header {
  background: rgba(11, 19, 38, 0.84);
  border-color: rgba(56, 189, 248, 0.2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: white;
  font-weight: 800;
  font-size: 0.95rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 4px 16px var(--primary-glow);
  position: relative;
  overflow: hidden;
}

.brand-mark::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.3) 0%, transparent 60%);
  pointer-events: none;
}

.brand-text {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.site-nav a {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 7px 14px;
  border-radius: 999px;
  transition: color var(--transition), background var(--transition), box-shadow var(--transition);
}

.site-nav a:hover {
  color: var(--primary);
  background: rgba(2, 132, 199, 0.08);
}

body[data-theme='dark'] .site-nav a:hover {
  background: rgba(56, 189, 248, 0.12);
}

.site-nav a.active {
  color: var(--primary);
  background: rgba(2, 132, 199, 0.12);
  box-shadow: inset 0 0 0 1px var(--glass-border);
}

body[data-theme='dark'] .site-nav a.active {
  color: var(--primary);
  background: rgba(56, 189, 248, 0.16);
  box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.3), 0 0 12px var(--primary-glow);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-toggle,
.theme-toggle,
.scroll-top {
  border: 1px solid var(--glass-border);
  background: var(--glass-surface-interactive);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text);
  cursor: pointer;
  box-shadow: var(--shadow), var(--glass-specular);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 600;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: var(--primary);
  display: block;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-toggle:hover,
.theme-toggle:hover,
.scroll-top:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 16px var(--primary-glow), var(--glass-specular);
}

/* =====================================================
   SCROLL PROGRESS
   ===================================================== */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto;
  height: 3px;
  z-index: 200;
  background: transparent;
}

.scroll-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  border-radius: 0 999px 999px 0;
  transition: width 0.1s linear;
}

/* =====================================================
   TOAST
   ===================================================== */
.toast {
  position: fixed;
  bottom: 90px;
  right: 20px;
  z-index: 500;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  padding: 14px 22px;
  border-radius: 16px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 8px 32px var(--primary-glow);
  border: 1px solid rgba(255, 255, 255, 0.25);
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* =====================================================
   HERO
   ===================================================== */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 40px;
  padding-top: 52px;
  position: relative;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  opacity: 0.5;
}

.hero-copy h1 {
  margin: 8px 0 16px;
  font-size: clamp(2rem, 3.4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 30%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

body[data-theme='dark'] .hero-copy h1 {
  background: linear-gradient(135deg, #ffffff 25%, var(--primary) 70%, var(--secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-subtitle {
  max-width: 58ch;
  color: var(--muted);
  line-height: 1.7;
  font-size: clamp(0.92rem, 0.4vw + 0.82rem, 1.02rem);
  margin: 0;
}

.hero-typing {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  font-weight: 600;
  color: var(--text);
  font-size: 1.05rem;
}

#typed-text {
  color: var(--primary);
  text-shadow: 0 0 12px var(--primary-glow);
}

.hero-actions,
.project-actions,
.social-links,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin: 28px 0 20px;
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 4px 18px var(--primary-glow), inset 0 1px 1px rgba(255,255,255,0.35);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--primary-glow), 0 0 16px var(--secondary-glow), inset 0 1px 1px rgba(255,255,255,0.5);
}

.btn-secondary {
  background: var(--glass-surface-interactive);
  border-color: var(--glass-border);
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04), var(--glass-specular);
}

.btn-secondary:hover {
  background: var(--glass-surface-elevated);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 6px 20px var(--primary-glow), var(--glass-specular);
  transform: translateY(-2px);
}

body[data-theme='dark'] .btn-secondary {
  background: rgba(16, 28, 56, 0.6);
  border-color: rgba(56, 189, 248, 0.2);
  color: #f0f6fc;
}

body[data-theme='dark'] .btn-secondary:hover {
  background: rgba(22, 38, 76, 0.85);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 18px var(--primary-glow);
}

/* =====================================================
   SOCIAL LINKS
   ===================================================== */
.social-links a {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  background: var(--glass-surface-interactive);
  color: var(--text);
  box-shadow: var(--glass-specular);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.social-links a:hover {
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-color: transparent;
  box-shadow: 0 4px 18px var(--primary-glow);
  transform: translateY(-3px);
}

/* =====================================================
   HERO STATS
   ===================================================== */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.stat-pill {
  text-align: center;
  padding: 20px 14px;
  cursor: default;
  background: var(--glass-surface-interactive);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: 18px;
  box-shadow: var(--shadow), var(--glass-specular);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.stat-pill:hover {
  transform: translateY(-3px);
  border-color: var(--glass-border-glow);
  box-shadow: var(--shadow-hover);
}

.stat-pill strong {
  display: block;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
}

.stat-pill span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* =====================================================
   PROFILE CARD
   ===================================================== */
.hero-panel {
  padding: 0;
}

.profile-card {
  display: grid;
  gap: 20px;
  padding: 26px;
}

.profile-photo {
  width: 100%;
  max-width: 230px;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center top;
  border-radius: 20px;
  border: 1px solid var(--glass-border-highlight);
  background-clip: padding-box;
  box-shadow: 
    0 0 0 3px var(--glass-border),
    0 8px 24px var(--primary-glow);
  background-color: var(--surface-solid);
  margin: 0 auto;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.profile-card:hover .profile-photo {
  transform: scale(1.02);
  box-shadow: 
    0 0 0 4px var(--glass-border-glow),
    0 12px 32px var(--primary-glow);
}

.profile-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.profile-points span,
.tag-row span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--glass-surface-interactive);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.015em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  transition: all var(--transition);
}

.profile-points span:hover,
.tag-row span:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(2, 132, 199, 0.08);
  box-shadow: 0 0 12px var(--primary-glow);
  transform: translateY(-1px);
}

body[data-theme='dark'] .profile-points span:hover,
body[data-theme='dark'] .tag-row span:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(56, 189, 248, 0.14);
  box-shadow: 0 0 14px var(--primary-glow);
}

/* =====================================================
   ABOUT / OVERVIEW
   ===================================================== */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}

.overview-card:nth-child(1),
.overview-card:nth-child(2),
.overview-card:nth-child(3) {
  grid-column: span 2;
}

.overview-card:nth-child(4),
.overview-card:nth-child(5) {
  grid-column: span 3;
}

@media (max-width: 1080px) {
  .overview-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .overview-card:nth-child(1),
  .overview-card:nth-child(2),
  .overview-card:nth-child(3),
  .overview-card:nth-child(4) {
    grid-column: span 2;
  }
  
  .overview-card:nth-child(5) {
    grid-column: span 4;
  }
}

@media (max-width: 768px) {
  .overview-grid {
    grid-template-columns: 1fr;
  }
  
  .overview-card {
    grid-column: span 1 !important;
  }
}

.overview-card {
  display: grid;
  gap: 14px;
  text-align: left;
  padding: 26px;
}

.overview-card i,
.achievement-card i {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 4px 16px var(--primary-glow);
  font-size: 1.15rem;
}

.overview-card h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.overview-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.92rem;
}

/* =====================================================
   SKILLS
   ===================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 440px), 1fr));
  gap: 22px;
}

.skill-list {
  display: grid;
  gap: 20px;
  padding: 28px;
}

.skill-list h3 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 700;
}

.skill-item {
  display: grid;
  gap: 8px;
}

.skill-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.92rem;
}

.skill-top span:first-child {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.skill-top span:last-child {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.skill-top i {
  color: var(--primary);
  width: 16px;
  text-align: center;
}

.skill-bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: var(--surface-soft);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
}

.skill-fill {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow: 0 0 10px var(--primary-glow);
}

.skill-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
  animation: shimmer 2.2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* =====================================================
   PROJECTS
   ===================================================== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

@media (max-width: 1200px) {
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
}

.project-card {
  overflow: hidden;
  display: grid;
  gap: 0;
  padding: 0;
}

.project-image-wrap {
  padding: 18px 18px 0;
  overflow: hidden;
}

.project-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  transition: transform 0.4s ease;
}

/* =====================================================
   PROJECT IMAGE CAROUSEL
   ===================================================== */
.project-carousel {
  position: relative;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  overflow: hidden;
  background-color: var(--surface-soft);
}

.carousel-track {
  width: 100%;
  height: 100%;
  position: relative;
}

.carousel-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.carousel-img.active {
  opacity: 1;
  visibility: visible;
}

.carousel-img.fit-contain {
  object-fit: contain;
  background-color: #ffffff;
  padding: 6px;
}

.carousel-img.fit-cover {
  object-fit: cover;
  object-position: center;
}

/* Controls */
.carousel-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--glass-surface-elevated);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text);
  display: grid;
  place-items: center;
  cursor: pointer;
  z-index: 10;
  transition: background var(--transition), color var(--transition), transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
  padding: 0;
}

body[data-theme='dark'] .carousel-control {
  background: rgba(15, 26, 52, 0.85);
  color: #f0f6fc;
}

.carousel-control:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 0 16px var(--primary-glow);
}

.carousel-control.prev { left: 10px; }
.carousel-control.next { right: 10px; }

/* Indicators */
.carousel-indicators {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 10;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  border: 1px solid var(--glass-border);
}

.carousel-dot.active {
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
  transform: scale(1.25);
}

.project-card:hover img {
  transform: scale(1.03);
}

.project-content {
  padding: 22px 20px 24px;
  display: grid;
  gap: 12px;
}

.project-content h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.project-content p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
  font-size: 0.92rem;
}

.project-meta {
  color: var(--muted);
  font-size: 0.82rem;
}

.project-content ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.85;
  font-size: 0.9rem;
}

.projects-more {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

/* =====================================================
   EDUCATION TIMELINE
   ===================================================== */
.timeline {
  display: grid;
  gap: 20px;
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--secondary), transparent);
}

.timeline-item {
  position: relative;
  padding: 26px 26px 26px 52px;
}

.timeline-dot {
  position: absolute;
  left: -8px;
  top: 28px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 0 0 4px var(--primary-glow), 0 0 16px var(--secondary-glow);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 4px var(--primary-glow), 0 0 12px var(--secondary-glow); }
  50% { box-shadow: 0 0 0 8px var(--primary-glow), 0 0 22px var(--primary); }
}

.timeline-item h3 {
  margin: 6px 0 8px;
  font-size: 1.08rem;
  font-weight: 700;
}

.timeline-item p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.92rem;
}

/* =====================================================
   ACHIEVEMENTS
   ===================================================== */
.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: 20px;
}

.achievement-card {
  text-align: left;
  display: grid;
  gap: 12px;
  padding: 24px;
}

.achievement-card h3 {
  margin: 0;
  font-size: 1rem;
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
}

.achievement-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

/* Color-coded icon accents per achievement */
.achievement-card:nth-child(1) i { background: linear-gradient(135deg, #f59e0b, #ef4444); box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35); }
.achievement-card:nth-child(2) i { background: linear-gradient(135deg, #6366f1, #8b5cf6); box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35); }
.achievement-card:nth-child(3) i { background: linear-gradient(135deg, #14b8a6, #10b981); box-shadow: 0 4px 16px rgba(20, 184, 166, 0.35); }
.achievement-card:nth-child(4) i { background: linear-gradient(135deg, #f59e0b, #14b8a6); box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35); }
.achievement-card:nth-child(5) i { background: linear-gradient(135deg, #0284c7, #6366f1); box-shadow: 0 4px 16px rgba(2, 132, 199, 0.35); }

/* =====================================================
   ANIMATED INFINITE 3D FLOATING CERTIFICATE RIBBON (R2)
   ===================================================== */
.cert-ribbon-wrapper,
#certRibbonWrapper {
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  contain: layout paint;
  position: relative;
  margin: 48px 0 24px 0;
  padding: 10px 0 24px 0;
}

.cert-ribbon-header {
  text-align: center;
  margin-bottom: 24px;
}

.cert-ribbon-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(0, 242, 254, 0.1);
  color: var(--cyber-cyan, #00f2fe);
  border: 1px solid rgba(0, 242, 254, 0.28);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.15);
  margin-bottom: 10px;
}

.cert-ribbon-title {
  font-family: 'Space Grotesk', 'Manrope', sans-serif;
  font-size: 1.65rem;
  font-weight: 700;
  margin: 0 0 8px 0;
  background: linear-gradient(135deg, #ffffff 30%, var(--cyber-cyan, #00f2fe) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

body:not([data-theme="dark"]) .cert-ribbon-title {
  background: linear-gradient(135deg, #0f172a 30%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cert-ribbon-subtitle {
  color: var(--muted, #94a3b8);
  font-size: 0.88rem;
  margin: 0 auto;
  max-width: 600px;
}

.cert-ribbon-viewport {
  width: 100%;
  overflow: hidden;
  position: relative;
  padding: 24px 0;
  perspective: 1200px;
  -webkit-perspective: 1200px;
  mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
  cursor: grab;
  touch-action: pan-y;
}

.cert-ribbon-viewport:active {
  cursor: grabbing;
}

.cert-ribbon-track,
#certRibbonTrack {
  display: flex;
  gap: 24px;
  padding-right: 24px;
  width: max-content;
  will-change: transform;
  transform-style: preserve-3d;
  animation: ribbonScroll 38s linear infinite;
}

#certRibbonWrapper:hover #certRibbonTrack,
.cert-ribbon-wrapper:hover .cert-ribbon-track,
.cert-ribbon-track:hover {
  animation-play-state: paused;
}

@keyframes ribbonScroll {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(-50%, 0, 0);
  }
}

.cert-card {
  flex: 0 0 320px;
  max-width: 85vw;
  height: 410px;
  display: flex;
  flex-direction: column;
  perspective: 1000px;
  -webkit-perspective: 1000px;
  transform-style: preserve-3d;
  transition: transform 0.3s cubic-bezier(0.2, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease;
  border-radius: 18px;
  border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.12));
  background: var(--glass-surface, rgba(16, 24, 40, 0.65));
  backdrop-filter: blur(var(--glass-blur, 16px));
  -webkit-backdrop-filter: blur(var(--glass-blur, 16px));
  cursor: pointer;
  user-select: none;
  box-shadow: 0 14px 34px -8px rgba(0, 0, 0, 0.55), 0 0 20px rgba(0, 242, 254, 0.08);
  position: relative;
  overflow: hidden;
  outline: none;
}

.cert-card:hover,
.cert-card:focus-visible {
  border-color: rgba(0, 242, 254, 0.45);
  box-shadow: 0 20px 42px -10px rgba(0, 0, 0, 0.65), 0 0 28px rgba(0, 242, 254, 0.25);
  z-index: 5;
}

.cert-card-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  transform-style: preserve-3d;
}

.cert-thumb {
  position: relative;
  width: 100%;
  height: 190px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--glass-border, rgba(255, 255, 255, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.4s ease;
}

.cert-card:hover .cert-thumb img {
  transform: scale(1.05);
}

.cert-thumb-doc {
  background: radial-gradient(circle at center, rgba(14, 165, 233, 0.15), rgba(15, 23, 42, 0.8));
}

.cert-thumb-synthetic {
  background: radial-gradient(circle at center, rgba(245, 158, 11, 0.18), rgba(15, 23, 42, 0.8));
}

.doc-icon-preview {
  font-size: 4rem;
  transition: transform 0.3s ease;
}

.doc-icon-preview.html-accent { color: #f97316; text-shadow: 0 0 20px rgba(249, 115, 22, 0.4); }
.doc-icon-preview.css-accent { color: #3b82f6; text-shadow: 0 0 20px rgba(59, 130, 246, 0.4); }
.doc-icon-preview.js-accent { color: #facc15; text-shadow: 0 0 20px rgba(250, 204, 21, 0.4); }

.synthetic-badge-icon {
  font-size: 4.2rem;
  color: #fbbf24;
  text-shadow: 0 0 24px rgba(245, 158, 11, 0.5);
  animation: pulseMedal 3s ease-in-out infinite alternate;
}

@keyframes pulseMedal {
  0% { transform: scale(1); }
  100% { transform: scale(1.08); }
}

.cert-card:hover .doc-icon-preview {
  transform: scale(1.1);
}

.cert-media-type {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  letter-spacing: 0.04em;
}

.cert-card-content {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: space-between;
  text-align: left;
}

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-gold {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.35);
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.15);
}

.badge-silver {
  background: rgba(148, 163, 184, 0.15);
  color: #e2e8f0;
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.badge-cyan {
  background: rgba(0, 242, 254, 0.12);
  color: var(--cyber-cyan, #00f2fe);
  border: 1px solid rgba(0, 242, 254, 0.32);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
}

.badge-purple {
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.35);
}

.badge-teal {
  background: rgba(20, 184, 166, 0.15);
  color: #2dd4bf;
  border: 1px solid rgba(20, 184, 166, 0.35);
}

.badge-orange {
  background: rgba(249, 115, 22, 0.15);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.35);
}

.badge-blue {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.35);
}

.badge-yellow {
  background: rgba(234, 179, 8, 0.15);
  color: #facc15;
  border: 1px solid rgba(234, 179, 8, 0.35);
}

.badge-indigo {
  background: rgba(79, 70, 229, 0.15);
  color: #818cf8;
  border: 1px solid rgba(79, 70, 229, 0.35);
}

.cert-title {
  font-family: 'Space Grotesk', 'Manrope', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 4px 0;
  color: var(--text, #f8fafc);
  line-height: 1.35;
}

.cert-org {
  font-size: 0.8rem;
  color: var(--muted, #94a3b8);
  margin: 0 0 12px 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cert-card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
}

.btn-cert-preview {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(0, 242, 254, 0.12);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--cyber-cyan, #00f2fe);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-cert-preview:hover {
  background: var(--cyber-cyan, #00f2fe);
  color: #0f172a;
  box-shadow: 0 0 14px rgba(0, 242, 254, 0.4);
}

.btn-cert-external {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.12));
  color: var(--muted, #94a3b8);
  font-size: 0.82rem;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-cert-external:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.12);
}

/* =====================================================
   CONTACT
   ===================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
}

.contact-info,
.contact-form {
  display: grid;
  gap: 16px;
  padding: 30px;
}

.contact-info h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.contact-info a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 18px;
  border-radius: 14px;
  background: var(--glass-surface-interactive);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--glass-specular);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition), background var(--transition), transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.contact-info a i {
  color: var(--primary);
  width: 18px;
  text-align: center;
}

.contact-info a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(2, 132, 199, 0.08);
  transform: translateX(4px);
  box-shadow: 0 0 14px var(--primary-glow);
}

body[data-theme='dark'] .contact-info a:hover {
  background: rgba(56, 189, 248, 0.14);
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--glass-border);
  background: var(--glass-surface-interactive);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text);
  border-radius: 14px;
  padding: 13px 18px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  font-size: 0.92rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--primary);
  background: var(--glass-surface-elevated);
  box-shadow: 0 0 0 3px var(--primary-glow), 0 0 16px var(--primary-glow);
}

body[data-theme='dark'] .contact-form input,
body[data-theme='dark'] .contact-form textarea {
  background: rgba(16, 28, 56, 0.5);
}

.contact-form textarea {
  resize: vertical;
  min-height: 170px;
}

.form-note {
  margin: 0;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0;
}

/* =====================================================
   FILTER BAR (projects page reuse)
   ===================================================== */
.tag-row span {
  font-size: 0.84rem;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.filter-btn {
  border: 1px solid var(--glass-border);
  background: var(--glass-surface-interactive);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--muted);
  border-radius: 999px;
  padding: 9px 18px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  box-shadow: var(--glass-specular);
  transition: all var(--transition);
}

.filter-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(2, 132, 199, 0.08);
  box-shadow: 0 0 14px var(--primary-glow);
  transform: translateY(-1px);
}

body[data-theme='dark'] .filter-btn:hover {
  background: rgba(56, 189, 248, 0.14);
}

.filter-btn.is-active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 18px var(--primary-glow);
  transform: translateY(-1px);
}

.is-hidden {
  display: none !important;
}

/* =====================================================
   FOOTER
   ===================================================== */
.site-footer {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto 32px;
  padding: 24px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  font-family: 'Manrope', sans-serif;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--muted);
  transition: color var(--transition);
}

.site-footer a:hover {
  color: var(--primary);
}

/* =====================================================
   SCROLL-TO-TOP
   ===================================================== */
.scroll-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 50px;
  height: 50px;
  border-radius: 14px;
  opacity: 0;
  transform: translateY(16px);
  z-index: 180;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border: none;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.38);
  transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.2s ease;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.5);
  transform: translateY(-3px) !important;
}

/* =====================================================
   SECTION SWITCHING (Single-Page Mode)
   ===================================================== */
[data-section] {
  animation: sectionFadeIn 0.45s ease forwards;
}

[data-section][hidden] {
  display: none !important;
}

@keyframes sectionFadeIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =====================================================
   AOS (Scroll animations)
   ===================================================== */
[data-aos] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   RESPONSIVE: TABLET
   ===================================================== */
@media (max-width: 1080px) {
  .hero,
  .skills-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .achievement-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero {
    padding-top: 32px;
  }
}

/* =====================================================
   RESPONSIVE: MOBILE NAV & TABLET
   ===================================================== */
@media (max-width: 860px) {
  .site-header {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 16px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    width: 100%;
    order: 10;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    padding: 10px 14px;
    border-radius: 8px;
  }

  .header-actions {
    margin-left: auto;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid,
  .field-row {
    grid-template-columns: 1fr;
  }
}

/* =====================================================
   RESPONSIVE: SMALL MOBILE (< 560px)
   ===================================================== */
@media (max-width: 560px) {
  .section,
  .site-header,
  .site-footer {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .section {
    padding: 48px 0;
  }

  .hero-copy h1 {
    font-size: clamp(2.1rem, 10vw, 3.2rem);
    line-height: 1.2;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .achievement-grid {
    grid-template-columns: 1fr;
  }

  .project-actions {
    flex-direction: column;
    width: 100%;
  }

  .project-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .btn,
  .theme-toggle {
    width: 100%;
    justify-content: center;
  }

  .project-card img,
  .project-carousel {
    height: auto;
    aspect-ratio: 16 / 10;
  }

  .site-footer {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
}

/* =====================================================
   REDUCED MOTION
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-aos],
  .skill-fill,
  .btn,
  .overview-card,
  .nav-toggle,
  .theme-toggle,
  .scroll-top,
  .timeline-dot {
    transition: none !important;
    animation: none !important;
  }
}

/* =====================================================
   PUBLICATIONS & RESEARCH
   ===================================================== */
.publications-heading {
  margin-top: 48px;
  margin-bottom: 24px;
  text-align: center;
}

.publications-heading h3 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text);
  font-family: 'Manrope', sans-serif;
  margin: 0;
}

.publications-heading p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 6px;
  margin-bottom: 0;
}

.publications-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.publication-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: 26px;
  gap: 14px;
  height: 100%;
}

.publication-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 1.35rem;
}

.publication-tag span {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--glass-surface-interactive);
  padding: 5px 14px;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--glass-specular);
}

.publication-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.45;
  margin: 0;
  font-family: 'Manrope', sans-serif;
}

.publication-card p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
  line-height: 1.7;
}

.publication-card .btn {
  margin-top: auto;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  width: auto;
}

@media (max-width: 768px) {
  .publications-grid {
    grid-template-columns: 1fr;
  }
}

/* =====================================================
   PROJECT SEARCH BAR
   ===================================================== */
.projects-controls-row {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  margin-bottom: 30px;
  width: 100%;
}

.search-container {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 1rem;
  pointer-events: none;
  transition: color 0.3s;
}

#projectSearch {
  width: 100%;
  padding: 13px 18px 13px 46px;
  border-radius: 14px;
  background: var(--glass-surface-interactive);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text);
  font-size: 0.92rem;
  font-family: inherit;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
  box-shadow: var(--glass-specular);
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}

#projectSearch:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow), 0 0 16px var(--primary-glow);
  background: var(--glass-surface-elevated);
}

#projectSearch:focus + .search-icon {
  color: var(--primary);
}

@media (min-width: 768px) {
  .projects-controls-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 35px;
  }
  
  .projects-controls-row .search-container {
    margin: 0;
    max-width: 360px;
  }
  
  .projects-controls-row .filter-bar {
    margin-bottom: 0;
  }
}

/* =====================================================
   LIGHTBOX MODAL (Dual-Mode: Image, PDF & Credential)
   ===================================================== */
.lightbox-modal {
  position: fixed;
  inset: 0;
  background: rgba(5, 9, 20, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  z-index: 9999;
  display: none;
  place-items: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  padding: 20px;
}

.lightbox-modal.show {
  display: grid;
  opacity: 1;
}

.lightbox-header {
  position: absolute;
  top: 18px;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10001;
  pointer-events: auto;
}

.lightbox-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lightbox-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(0, 242, 254, 0.15);
  border: 1px solid rgba(0, 242, 254, 0.35);
  color: var(--cyber-cyan, #00f2fe);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lightbox-type {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.8rem;
  font-weight: 500;
}

.lightbox-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lightbox-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(0, 242, 254, 0.18);
  border: 1px solid rgba(0, 242, 254, 0.4);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.lightbox-btn:hover {
  background: var(--primary, #00f2fe);
  color: #0f172a;
  box-shadow: 0 0 14px var(--primary-glow, rgba(0, 242, 254, 0.5));
}

.lightbox-content {
  max-width: 94%;
  max-height: 85vh;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 10000;
  margin-top: 24px;
}

.lightbox-content img,
#lightboxImage {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7), 0 0 24px var(--primary-glow, rgba(0, 242, 254, 0.2));
  border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.12));
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.lightbox-modal.show .lightbox-content img,
.lightbox-modal.show #lightboxImage {
  transform: scale(1);
}

#lightboxFrame {
  width: 90vw;
  max-width: 960px;
  height: 78vh;
  max-height: 80vh;
  border: none;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.8), 0 0 30px var(--primary-glow, rgba(0, 242, 254, 0.3));
}

.lightbox-custom-card {
  max-width: 90vw;
  width: min(480px, 90vw);
  padding: 40px 32px;
  border-radius: 20px;
  background: var(--glass-surface, rgba(16, 24, 40, 0.85));
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 242, 254, 0.35);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.75), 0 0 32px rgba(0, 242, 254, 0.22);
  text-align: center;
  color: #fff;
}

.custom-card-emblem {
  font-size: 4.2rem;
  color: #fbbf24;
  margin-bottom: 16px;
  text-shadow: 0 0 26px rgba(245, 158, 11, 0.6);
}

.lightbox-custom-card h3 {
  font-size: 1.45rem;
  font-family: 'Space Grotesk', 'Manrope', sans-serif;
  margin: 0 0 8px 0;
  color: #fff;
}

.lightbox-custom-card .award-rank {
  color: #fbbf24;
  font-weight: 700;
  font-size: 0.96rem;
  margin: 0 0 12px 0;
}

.lightbox-custom-card .award-summary {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0 0 20px 0;
}

.lightbox-custom-card .award-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.lightbox-custom-card .award-tags span {
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(0, 242, 254, 0.12);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--cyber-cyan, #00f2fe);
  font-size: 0.76rem;
  font-weight: 600;
}

.lightbox-close {
  position: static;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.85);
  font-size: 2.6rem;
  cursor: pointer;
  transition: color 0.2s, transform 0.2s, text-shadow 0.2s;
  padding: 0;
  line-height: 1;
}

.lightbox-close:hover {
  color: var(--primary, #00f2fe);
  text-shadow: 0 0 14px var(--primary-glow, rgba(0, 242, 254, 0.5));
  transform: scale(1.1);
}

.lightbox-caption {
  position: absolute;
  bottom: 20px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  font-weight: 500;
  text-align: center;
  width: 100%;
  padding: 0 20px;
  font-family: 'Manrope', sans-serif;
  letter-spacing: 0.02em;
}

/* Cursor pointer style for zoomable images */
.project-card img,
.carousel-img {
  cursor: zoom-in;
}

/* =====================================================
   HEADER GLOBAL SEARCH (EASTER EGG)
   ===================================================== */
.header-search {
  position: relative;
  display: flex;
  align-items: center;
  max-width: 140px;
  transition: max-width 0.3s ease;
}

.header-search i {
  position: absolute;
  left: 12px;
  color: var(--muted);
  font-size: 0.85rem;
  pointer-events: none;
  transition: color 0.3s;
}

#headerSearch {
  width: 100%;
  padding: 8px 14px 8px 30px;
  border-radius: 99px;
  background: var(--glass-surface-interactive);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text);
  font-size: 0.82rem;
  font-family: inherit;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
  -webkit-user-select: text;
  user-select: text;
  box-shadow: var(--glass-specular);
}

#headerSearch:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--glass-surface-elevated);
  box-shadow: 0 0 0 2px var(--primary-glow), 0 0 12px var(--primary-glow);
}

#headerSearch:focus + i {
  color: var(--primary);
}

@media (min-width: 768px) {
  .header-search:focus-within {
    max-width: 180px;
  }
}

/* =====================================================
   INTERACTIVE CYBER TERMINAL
   ===================================================== */
.terminal-container {
  max-width: 900px;
  margin: 0 auto;
  background: rgba(11, 19, 38, 0.90);
  border: 1px solid var(--glass-border);
  box-shadow: 
    0 20px 50px rgba(0, 0, 0, 0.55),
    0 0 24px var(--primary-glow),
    var(--glass-specular);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  position: relative;
}

.terminal-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border-highlight), transparent);
  pointer-events: none;
  border-radius: 999px;
  opacity: 0.9;
  z-index: 10;
}

body[data-theme='light'] .terminal-container {
  background: rgba(10, 14, 23, 0.94);
  border-color: rgba(2, 132, 199, 0.25);
  box-shadow: 
    0 20px 50px rgba(15, 23, 42, 0.25),
    0 0 24px rgba(2, 132, 199, 0.15),
    var(--glass-specular);
}

.terminal-bar {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  background: rgba(11, 15, 25, 0.88);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.terminal-buttons {
  display: flex;
  gap: 8px;
}

.t-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  box-shadow: 0 0 6px currentColor;
}

.t-red { background: #ef4444; color: #ef4444; }
.t-yellow { background: #f59e0b; color: #f59e0b; }
.t-green { background: #10b981; color: #10b981; }

.terminal-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  color: #94a3b8;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.terminal-badge {
  margin-left: auto;
  color: #10b981;
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 4px 12px;
  border-radius: 99px;
  font-family: monospace;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.2);
}

.terminal-body {
  height: 350px;
  padding: 20px;
  overflow-y: auto;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  color: #e2e8f0;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(6, 9, 15, 0.92);
}

/* Custom scrollbar for terminal */
.terminal-body::-webkit-scrollbar {
  width: 8px;
}
.terminal-body::-webkit-scrollbar-track {
  background: #06090f;
}
.terminal-body::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 4px;
}

.t-line {
  white-space: pre-wrap;
  word-break: break-all;
}

.t-green { color: #10b981; }
.t-yellow { color: #f59e0b; }
.t-red { color: #ef4444; }
.t-cyan { color: #06b6d4; }
.t-prompt { color: #38bdf8; font-weight: 700; margin-right: 8px; }
.t-log { color: #64748b; }

.terminal-input-row {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  background: rgba(8, 11, 18, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
}

#terminalInput {
  flex: 1;
  background: transparent;
  border: none;
  color: #e2e8f0;
  outline: none;
  font-family: inherit;
  font-size: inherit;
  padding: 0;
  caret-color: #38bdf8;
  -webkit-user-select: text;
  user-select: text;
}

.terminal-hint {
  text-align: center;
  margin-top: 15px;
  font-size: 0.88rem;
  color: var(--muted);
}

.cmd-chip {
  background: var(--glass-surface-interactive);
  border: 1px solid var(--glass-border);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 6px;
  font-family: monospace;
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
  margin: 0 3px;
}

.cmd-chip:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  box-shadow: 0 0 10px var(--primary-glow);
}

/* =====================================================
   SCREENSHOT & PRINT SHIELD (EASTER EGG SECURITY)
   ===================================================== */
.screenshot-shield {
  position: fixed;
  inset: 0;
  background: #000000 !important;
  z-index: 999999;
  display: none;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-family: 'Inter', sans-serif;
}

.screenshot-shield.active {
  display: flex !important;
}

.shield-message {
  text-align: center;
  padding: 20px;
}

.shield-message i {
  font-size: 3.5rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.shield-message p {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

@media print {
  body {
    background: #000000 !important;
    color: #000000 !important;
  }
  body * {
    display: none !important;
  }
  body::before {
    content: "Screen capture and printing are disabled to protect content.";
    display: block !important;
    color: #ffffff !important;
    background: #000000 !important;
    font-size: 24px !important;
    text-align: center !important;
    padding: 120px 20px !important;
    font-family: sans-serif !important;
    font-weight: bold !important;
  }
}

/* =====================================================
   KABILAN'S PORTFOLIO AI CHATBOT (GUARDRAILED VISITOR WIDGET)
   ===================================================== */
.km-chatbot-container {
  position: fixed;
  bottom: 0;
  right: 0;
  z-index: 998;
  pointer-events: none;
}

/* Launcher Floating Button */
.km-chatbot-launcher {
  position: fixed;
  right: 24px;
  bottom: 84px;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  border: none;
  cursor: pointer;
  z-index: 998;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.42);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease;
  pointer-events: auto;
  user-select: none;
  -webkit-user-select: none;
}

.km-chatbot-launcher:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.58);
}

.km-chatbot-launcher:active {
  transform: translateY(0) scale(0.96);
}

.launcher-icon {
  font-size: 1.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s ease;
}

.km-chatbot-launcher.active .launcher-icon {
  transform: rotate(90deg) scale(0.9);
}

.launcher-pulse {
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid rgba(20, 184, 166, 0.7);
  animation: kmPulseRing 2.4s infinite cubic-bezier(0.24, 0, 0.38, 1);
  pointer-events: none;
}

@keyframes kmPulseRing {
  0% { transform: scale(0.95); opacity: 0.9; }
  60% { transform: scale(1.35); opacity: 0; }
  100% { transform: scale(1.35); opacity: 0; }
}

.launcher-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateX(6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  backdrop-filter: blur(10px);
}

.km-chatbot-launcher:hover .launcher-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* Chat Window Modal */
.km-chatbot-window {
  position: fixed;
  right: 24px;
  bottom: 150px;
  width: 380px;
  max-width: calc(100vw - 32px);
  height: 520px;
  max-height: calc(100vh - 170px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.24);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(18px) scale(0.96);
  transition: opacity 0.26s cubic-bezier(0.16, 1, 0.3, 1), transform 0.26s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 999;
}

.km-chatbot-window.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* Chat Window Header */
.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--border);
}

.chatbot-header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bot-avatar {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.status-dot {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #10b981;
  border: 2px solid var(--surface);
}

.bot-meta {
  display: flex;
  flex-direction: column;
}

.bot-title {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  line-height: 1.2;
}

.bot-status {
  font-size: 0.74rem;
  color: #10b981;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.chatbot-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chat-tool-btn {
  background: none;
  border: none;
  color: var(--muted);
  width: 30px;
  height: 30px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: background 0.15s ease, color 0.15s ease;
}

.chat-tool-btn:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--text);
}

body[data-theme='dark'] .chat-tool-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Quick Suggestion Chips Bar */
.chatbot-chips-bar {
  display: flex;
  gap: 6px;
  padding: 8px 12px;
  overflow-x: auto;
  scrollbar-width: none;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.chatbot-chips-bar::-webkit-scrollbar {
  display: none;
}

.chat-chip {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 5px 11px;
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.18s ease;
}

.chat-chip:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: translateY(-1px);
}

/* Messages Feed */
.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scrollbar-width: thin;
}

.chat-msg {
  display: flex;
  gap: 8px;
  max-width: 90%;
  animation: kmMsgFade 0.24s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes kmMsgFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.bot-msg {
  align-self: flex-start;
}

.user-msg {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.user-msg .msg-avatar {
  background: var(--secondary);
  color: #ffffff;
  border-color: var(--secondary);
}

.msg-content {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.86rem;
  line-height: 1.45;
  word-break: break-word;
}

.bot-msg .msg-content {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-top-left-radius: 4px;
}

.user-msg .msg-content {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  border-top-right-radius: 4px;
  box-shadow: 0 3px 10px rgba(37, 99, 235, 0.28);
}

.msg-content p {
  margin: 0 0 6px;
}

.msg-content p:last-child {
  margin-bottom: 0;
}

.msg-content ul, .msg-content ol {
  margin: 4px 0 6px;
  padding-left: 18px;
}

.msg-content li {
  margin-bottom: 3px;
}

.msg-content a {
  color: var(--primary);
  text-decoration: underline;
  font-weight: 600;
}

.user-msg .msg-content a {
  color: #ffffff;
}

.msg-content code {
  font-family: var(--admin-mono-font, monospace);
  background: rgba(0, 0, 0, 0.08);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.82rem;
}

body[data-theme='dark'] .msg-content code {
  background: rgba(255, 255, 255, 0.12);
}

.msg-footnote {
  font-size: 0.74rem;
  color: var(--muted);
  margin-top: 6px;
  font-style: italic;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Typing Indicator Animation */
.typing-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
}

.typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  animation: kmDotBounce 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes kmDotBounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1.15); opacity: 1; }
}

/* Chat Input Footer */
.chatbot-footer {
  padding: 10px 14px 12px;
  background: var(--surface-soft);
  border-top: 1px solid var(--border);
}

.chatbot-input-form {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chatbot-input {
  flex: 1;
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.chatbot-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
}

.chatbot-send-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: background 0.2s, transform 0.15s;
  flex-shrink: 0;
}

.chatbot-send-btn:hover {
  background: var(--secondary);
  transform: translateY(-1px);
}

.chatbot-send-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.chatbot-disclaimer {
  text-align: center;
  margin-top: 6px;
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* Responsive Overrides */
@media (max-width: 640px) {
  .km-chatbot-launcher {
    right: 16px;
    bottom: 78px;
    width: 48px;
    height: 48px;
  }
  .km-chatbot-window {
    right: 12px;
    left: 12px;
    width: auto;
    max-width: none;
    bottom: 72px;
    height: calc(100vh - 120px);
    max-height: 520px;
  }
}