/* ═══════════════════════════════════════════════════════════
   RANDIKA PRABASHWARA PORTFOLIO — DESIGN SYSTEM
   ═══════════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ───────────────────────────────────────── */
:root {
  /* Accent palette */
  --accent-blue:   #00C8FF;
  --accent-purple: #8B5CF6;
  --accent-green:  #10B981;
  --accent-orange: #F59E0B;
  --accent-red:    #EF4444;
  --accent-teal:   #14B8A6;
  --accent-pink:   #EC4899;
  --accent-cyan:   #06B6D4;
  --accent-gold:   #F59E0B;

  /* Category colours */
  --cat-research:   #00C8FF;
  --cat-enterprise: #10B981;
  --cat-bigdata:    #8B5CF6;

  /* Status colours */
  --status-completed:   #10B981;
  --status-in-progress: #00C8FF;
  --status-peer-review: #F59E0B;
  --status-ongoing:     #8B5CF6;

  /* Typography */
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'Fira Code', 'JetBrains Mono', monospace;

  /* Easing */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* DARK THEME (default) */
[data-theme="dark"] {
  --bg-base:     #060B18;
  --bg-surface:  #0D1527;
  --bg-elevated: #131E35;
  --bg-hover:    #1A2742;
  --bg-glass:    rgba(13, 21, 39, 0.7);
  --border:      rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 200, 255, 0.3);
  --text-1:      #E8F0FE;
  --text-2:      #8892A4;
  --text-3:      #5A6478;
  --shadow:      0 4px 24px rgba(0, 0, 0, 0.6);
  --shadow-lg:   0 20px 60px rgba(0, 0, 0, 0.8);
  --orb-1: rgba(0, 200, 255, 0.15);
  --orb-2: rgba(139, 92, 246, 0.12);
  --orb-3: rgba(16, 185, 129, 0.1);
}

/* LIGHT THEME */
[data-theme="light"] {
  --bg-base:     #F0F4FF;
  --bg-surface:  #FFFFFF;
  --bg-elevated: #E8EFFF;
  --bg-hover:    #DCE7FF;
  --bg-glass:    rgba(255, 255, 255, 0.75);
  --border:      rgba(0, 0, 0, 0.08);
  --border-glow: rgba(0, 100, 204, 0.25);
  --text-1:      #1A2340;
  --text-2:      #4A5568;
  --text-3:      #8896A8;
  --shadow:      0 4px 24px rgba(0, 0, 50, 0.1);
  --shadow-lg:   0 20px 60px rgba(0, 0, 50, 0.18);
  --orb-1: rgba(0, 120, 200, 0.1);
  --orb-2: rgba(139, 92, 246, 0.08);
  --orb-3: rgba(16, 185, 129, 0.07);
  --accent-blue: #0066CC;
  --cat-research: #0066CC;
}

/* ── RESET & BASE ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-1);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.4s var(--ease-smooth), color 0.4s var(--ease-smooth);
}

::selection { background: rgba(0, 200, 255, 0.25); color: var(--text-1); }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── ANIMATED BACKGROUND ─────────────────────────────────── */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

#particles-canvas {
  position: absolute;
  inset: 0;
  opacity: 0.5;
}

.gradient-orbs { position: absolute; inset: 0; }

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: drift 20s ease-in-out infinite;
}
.orb-1 {
  width: 600px; height: 600px;
  background: var(--orb-1);
  top: -10%; left: -10%;
  animation-duration: 25s;
}
.orb-2 {
  width: 500px; height: 500px;
  background: var(--orb-2);
  top: 30%; right: -15%;
  animation-duration: 30s;
  animation-delay: -8s;
}
.orb-3 {
  width: 400px; height: 400px;
  background: var(--orb-3);
  bottom: -5%; left: 30%;
  animation-duration: 22s;
  animation-delay: -15s;
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(40px, -60px) scale(1.05); }
  66%       { transform: translate(-30px, 40px) scale(0.95); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.5;
}

/* ── LAYOUT ──────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

section { position: relative; z-index: 1; }

.section-pad { padding: 100px 0; }

/* ── NAVIGATION ──────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s var(--ease-smooth);
}

#navbar.scrolled {
  box-shadow: var(--shadow);
  height: 56px;
}

.nav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-1);
  background: var(--bg-elevated);
}

.nav-links a.active {
  color: var(--accent-blue);
  background: rgba(0, 200, 255, 0.08);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-2);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.2s;
}
.theme-toggle:hover { border-color: var(--border-glow); color: var(--text-1); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  width: 22px; height: 2px;
  background: var(--text-2);
  border-radius: 2px;
  transition: all 0.3s;
}

/* Mobile nav */
.nav-menu-mobile {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}
.nav-menu-mobile.open { display: flex; }
.nav-menu-mobile a {
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--text-2);
  font-weight: 500;
  transition: all 0.2s;
}
.nav-menu-mobile a:hover { background: var(--bg-elevated); color: var(--text-1); }

/* ── SCROLL TO TOP ───────────────────────────────────────── */
#scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border: none;
  color: white;
  font-size: 1rem;
  cursor: pointer;
  z-index: 500;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s var(--ease-spring);
  box-shadow: 0 4px 20px rgba(0, 200, 255, 0.3);
}
#scroll-top.visible { opacity: 1; transform: translateY(0); }
#scroll-top:hover { transform: translateY(-2px); }

/* ── SECTION HEADER ─────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 64px; }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-blue);
  background: rgba(0, 200, 255, 0.1);
  border: 1px solid rgba(0, 200, 255, 0.2);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--text-1) 0%, var(--text-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--text-2);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── HERO SECTION ────────────────────────────────────────── */
#home {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 0 60px;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.hero-greeting {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.125rem;
  color: var(--text-2);
  font-weight: 500;
}

.hero-name {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  background: linear-gradient(135deg, var(--text-1) 30%, var(--accent-blue) 70%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-role-wrapper {
  height: 36px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-role {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--accent-blue);
  font-weight: 500;
}

.hero-role::after {
  content: '|';
  animation: blink 0.7s infinite;
  margin-left: 2px;
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-tagline {
  font-size: 1.125rem;
  color: var(--text-2);
  max-width: 600px;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  justify-content: center;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.hero-stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.5;
  animation: bounce 2s infinite;
}
.scroll-indicator span { font-size: 0.7rem; color: var(--text-3); letter-spacing: 0.1em; }
.scroll-indicator i { color: var(--text-3); font-size: 0.875rem; }

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: all 0.25s var(--ease-spring);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  box-shadow: 0 4px 20px rgba(0, 200, 255, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 200, 255, 0.4);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-1);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--border-glow);
  transform: translateY(-2px);
  background: var(--bg-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--accent-blue);
  border: 1px solid var(--accent-blue);
  padding: 8px 20px;
  font-size: 0.8rem;
}
.btn-ghost:hover {
  background: rgba(0, 200, 255, 0.1);
  transform: translateY(-1px);
}

.btn-sm { padding: 8px 18px; font-size: 0.8rem; border-radius: 8px; }

/* ── CARDS / GLASS ───────────────────────────────────────── */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s var(--ease-smooth);
}

.glass-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow);
}

/* ── JOURNEY SECTION ─────────────────────────────────────── */
#journey { padding: 100px 0; }

.journey-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 60px;
  align-items: start;
}

/* Profile card */
.profile-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  position: sticky;
  top: 84px;
}

.profile-photo-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.profile-photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 10%;
  transition: transform 0.6s var(--ease-smooth);
}
.profile-photo-frame:hover img { transform: scale(1.04); }

.profile-photo-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(transparent, var(--bg-surface));
}

.profile-card-body { padding: 24px; }

.profile-name-tag {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.profile-role-tag {
  font-size: 0.825rem;
  color: var(--accent-blue);
  font-weight: 500;
  font-family: var(--font-mono);
  margin-bottom: 16px;
}

.profile-bio {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 20px;
}

.profile-highlights { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }

.profile-highlight {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.825rem;
  color: var(--text-2);
  padding: 8px 12px;
  background: var(--bg-elevated);
  border-radius: 10px;
}
.profile-highlight span:first-child { font-size: 1rem; flex-shrink: 0; }

.profile-actions { display: flex; flex-direction: column; gap: 10px; }

/* Journey tabs and timeline */
.journey-content { min-width: 0; }

.journey-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-elevated);
  border-radius: 12px;
  margin-bottom: 36px;
  width: fit-content;
}

.journey-tab {
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  transition: all 0.2s;
}
.journey-tab.active {
  background: var(--bg-surface);
  color: var(--text-1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.journey-panel { display: none; }
.journey-panel.active { display: block; }

/* Timeline */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 12px; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent-blue), var(--accent-purple), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
}

.timeline-dot {
  position: absolute;
  left: -26px;
  top: 4px;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--bg-base);
  border: 2px solid var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: var(--accent-blue);
  transition: all 0.3s;
}
.timeline-item:hover .timeline-dot {
  background: var(--accent-blue);
  color: white;
  box-shadow: 0 0 16px rgba(0, 200, 255, 0.5);
}

.timeline-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  transition: all 0.3s;
}
.timeline-card:hover {
  border-color: var(--border-glow);
  transform: translateX(4px);
  box-shadow: var(--shadow);
}

.timeline-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.timeline-role {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-1);
}

.timeline-period {
  font-size: 0.75rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  padding: 3px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

.timeline-company {
  font-size: 0.875rem;
  color: var(--accent-blue);
  font-weight: 500;
  margin-bottom: 4px;
}

.timeline-location {
  font-size: 0.775rem;
  color: var(--text-3);
  margin-bottom: 12px;
}

.timeline-type-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.type-industry { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.type-research  { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.type-academic  { background: rgba(20, 184, 166, 0.15); color: var(--accent-teal); }

.timeline-highlights { list-style: none; display: flex; flex-direction: column; gap: 6px; }

.timeline-highlights li {
  font-size: 0.825rem;
  color: var(--text-2);
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}
.timeline-highlights li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-blue);
}

.edu-details { list-style: none; display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
.edu-details li {
  font-size: 0.825rem;
  color: var(--text-2);
  padding-left: 16px;
  position: relative;
}
.edu-details li::before {
  content: '◦';
  position: absolute;
  left: 4px;
  color: var(--accent-blue);
}

/* ── PUBLICATIONS ─────────────────────────────────────────── */
#publications { padding: 80px 0; }

.pub-grid { display: grid; gap: 20px; }

.pub-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-start: center;
  transition: all 0.3s;
}
.pub-card:hover { border-color: var(--border-glow); box-shadow: var(--shadow); }

.pub-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.pub-type-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(0, 200, 255, 0.1);
  color: var(--accent-blue);
  border: 1px solid rgba(0, 200, 255, 0.2);
}

.pub-status {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.pub-year {
  font-size: 0.75rem;
  color: var(--text-3);
  font-family: var(--font-mono);
}

.pub-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text-1);
}

.pub-authors {
  font-size: 0.825rem;
  color: var(--text-2);
  margin-bottom: 6px;
}
.pub-authors strong { color: var(--accent-blue); }

.pub-venue {
  font-size: 0.8rem;
  color: var(--text-3);
  font-style: italic;
  margin-bottom: 12px;
}

.pub-abstract {
  font-size: 0.825rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 16px;
}

.pub-metrics { display: flex; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }

.pub-metric {
  background: var(--bg-elevated);
  border-radius: 8px;
  padding: 8px 14px;
  text-align: center;
}
.pub-metric .value { font-size: 1.1rem; font-weight: 700; color: var(--accent-blue); }
.pub-metric .label { font-size: 0.7rem; color: var(--text-3); }

.pub-links { display: flex; gap: 8px; flex-wrap: wrap; }

.pub-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.775rem;
  font-weight: 600;
  background: var(--bg-elevated);
  color: var(--text-2);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
}
.pub-link-btn:hover { border-color: var(--border-glow); color: var(--accent-blue); }
.pub-link-btn.disabled { opacity: 0.4; cursor: not-allowed; }

/* ── PROJECTS SECTION ─────────────────────────────────────── */
#projects { padding: 100px 0; }

.projects-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 36px;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-elevated);
  border-radius: 12px;
}

.filter-tab {
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-tab.active {
  background: var(--bg-surface);
  color: var(--text-1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.filter-tab.active[data-cat="research"]   { color: var(--cat-research); }
.filter-tab.active[data-cat="enterprise"] { color: var(--cat-enterprise); }
.filter-tab.active[data-cat="bigdata"]    { color: var(--cat-bigdata); }

.filter-count {
  font-size: 0.65rem;
  padding: 2px 7px;
  border-radius: 20px;
  background: var(--bg-elevated);
  color: var(--text-3);
  font-weight: 700;
}
.filter-tab.active .filter-count {
  background: rgba(0, 200, 255, 0.15);
  color: var(--accent-blue);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 16px;
  min-width: 240px;
  transition: border-color 0.2s;
}
.search-box:focus-within { border-color: var(--border-glow); }
.search-box i { color: var(--text-3); font-size: 0.875rem; }
.search-box input {
  border: none;
  background: transparent;
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  outline: none;
  width: 100%;
}
.search-box input::placeholder { color: var(--text-3); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

/* Project Card */
.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
  position: relative;
  display: flex;
  flex-direction: column;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-accent, linear-gradient(90deg, var(--accent-blue), var(--accent-purple)));
}

.project-card.cat-research { --card-accent: linear-gradient(90deg, var(--cat-research), var(--accent-purple)); }
.project-card.cat-enterprise { --card-accent: linear-gradient(90deg, var(--cat-enterprise), var(--accent-teal)); }
.project-card.cat-bigdata { --card-accent: linear-gradient(90deg, var(--cat-bigdata), var(--accent-pink)); }

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-glow);
}

.project-card-header {
  padding: 20px 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.project-badges { display: flex; gap: 6px; flex-wrap: wrap; }

.badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
}

.badge-cat-research   { background: rgba(0, 200, 255, 0.12); color: var(--cat-research); }
.badge-cat-enterprise { background: rgba(16, 185, 129, 0.12); color: var(--cat-enterprise); }
.badge-cat-bigdata    { background: rgba(139, 92, 246, 0.12); color: var(--cat-bigdata); }

.badge-featured {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-gold);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.completion-ring {
  position: relative;
  width: 40px; height: 40px;
  flex-shrink: 0;
}
.completion-ring svg { transform: rotate(-90deg); }
.completion-ring .ring-track { fill: none; stroke: var(--bg-elevated); stroke-width: 3; }
.completion-ring .ring-fill  { fill: none; stroke-width: 3; stroke-linecap: round; transition: stroke-dashoffset 1s var(--ease-smooth); }
.completion-ring .ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--text-2);
}

.project-card-body { padding: 0 20px 20px; flex: 1; display: flex; flex-direction: column; }

.project-status-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
}

.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
}
.status-completed   { background: var(--status-completed); box-shadow: 0 0 6px var(--status-completed); }
.status-in-progress { background: var(--status-in-progress); animation: pulse-status 2s infinite; }
.status-peer-review { background: var(--status-peer-review); }
.status-ongoing     { background: var(--status-ongoing); animation: pulse-status 2s infinite; }

@keyframes pulse-status {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 currentColor; }
  50%       { opacity: 0.8; box-shadow: 0 0 0 4px rgba(0, 200, 255, 0); }
}

.status-label { font-size: 0.7rem; font-weight: 600; color: var(--text-3); letter-spacing: 0.06em; text-transform: uppercase; }

.project-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text-1);
}

.project-period {
  font-size: 0.75rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  margin-bottom: 10px;
}

.project-summary {
  font-size: 0.825rem;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.project-tech-preview {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.tech-tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--bg-elevated);
  color: var(--text-2);
  border: 1px solid var(--border);
}

.tech-tag-more {
  font-size: 0.7rem;
  color: var(--text-3);
  padding: 3px 8px;
  align-self: center;
}

.project-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.team-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-3);
}

.team-avatars { display: flex; }
.team-avatar {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 700;
  color: white;
  border: 1.5px solid var(--bg-surface);
  margin-left: -6px;
}
.team-avatars .team-avatar:first-child { margin-left: 0; }

.view-details-btn {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}
.project-card:hover .view-details-btn { gap: 8px; }

.filter-tabs-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.filter-tabs-wrap::-webkit-scrollbar { display: none; }

/* ── PAGINATION ──────────────────────────────────────────── */
.pagination-bar { margin-top: 32px; }

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.page-info {
  font-size: 0.8rem;
  color: var(--text-3);
  font-family: var(--font-mono);
}

.page-btns {
  display: flex;
  gap: 6px;
  align-items: center;
}

.page-btn {
  min-width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-2);
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  padding: 0 10px;
}

.page-btn:hover:not(:disabled) {
  border-color: var(--border-glow);
  color: var(--accent-blue);
  transform: translateY(-1px);
}

.page-btn.active {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-color: transparent;
  color: white;
  box-shadow: 0 3px 12px rgba(0, 200, 255, 0.3);
}

.page-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Empty state */
.projects-empty {
  grid-column: 1/-1;
  text-align: center;
  padding: 80px 20px;
  color: var(--text-3);
}
.projects-empty i { font-size: 3rem; margin-bottom: 16px; opacity: 0.4; }
.projects-empty p { font-size: 1rem; }

/* ── PROJECT MODAL ────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s;
}
.modal-overlay.open { pointer-events: all; opacity: 1; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
}

.modal-panel {
  position: relative;
  z-index: 1;
  width: min(680px, 95vw);
  height: 100vh;
  background: var(--bg-surface);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.45s var(--ease-spring);
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.modal-panel::-webkit-scrollbar { width: 4px; }
.modal-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.modal-overlay.open .modal-panel { transform: translateX(0); }

.modal-header {
  padding: 32px 32px 24px;
  position: relative;
  overflow: hidden;
}
.modal-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--modal-gradient, linear-gradient(135deg, var(--accent-blue), var(--accent-purple)));
  opacity: 0.1;
  pointer-events: none;
}
.modal-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--modal-gradient, linear-gradient(90deg, var(--accent-blue), var(--accent-purple)));
  opacity: 0.4;
}

.modal-header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  position: relative;
}

.modal-badges { display: flex; gap: 6px; flex-wrap: wrap; }

.modal-close {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-2);
  font-size: 0.9rem;
  transition: all 0.25s;
  flex-shrink: 0;
}
.modal-close:hover {
  background: rgba(239,68,68,0.1);
  border-color: rgba(239,68,68,0.3);
  color: #EF4444;
  transform: rotate(90deg);
}

.modal-title {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin-bottom: 12px;
  position: relative;
  color: var(--text-1);
}

.modal-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; position: relative; }
.modal-meta-item {
  font-size: 0.775rem;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--bg-elevated);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}
.modal-meta-item i { color: var(--accent-blue); font-size: .7rem; }

.modal-body { padding: 0 32px 40px; flex: 1; }

.modal-section { margin-bottom: 30px; }

.modal-section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.modal-section-title i { color: var(--accent-blue); width: 14px; text-align: center; }

.modal-status-row {
  display: flex;
  align-items: stretch;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 24px;
  overflow: hidden;
}
.modal-status-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 20px;
  flex: 1;
}
.modal-status-item:not(:last-child) { border-right: 1px solid var(--border); }
.modal-status-item .label { font-size: 0.65rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; }
.modal-status-item .value { font-size: 0.9rem; font-weight: 700; color: var(--text-1); display: flex; align-items: center; gap: 6px; }

.modal-progress-bar {
  height: 6px;
  background: var(--bg-base);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 8px;
}
.modal-progress-fill {
  height: 100%;
  border-radius: 6px;
  background: var(--modal-gradient, linear-gradient(90deg, var(--accent-blue), var(--accent-purple)));
  transition: width 1.2s var(--ease-smooth);
  box-shadow: 0 0 8px rgba(0, 200, 255, 0.35);
}

.modal-text { font-size: 0.9rem; color: var(--text-2); line-height: 1.8; }

.modal-ps-card {
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.75;
  border: 1px solid var(--border);
}
.modal-ps-card.problem { background: rgba(239,68,68,0.05); border-color: rgba(239,68,68,0.15); }
.modal-ps-card.solution { background: rgba(16,185,129,0.05); border-color: rgba(16,185,129,0.15); }

.metrics-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }

.metric-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 12px;
  text-align: center;
  transition: all 0.25s var(--ease-spring);
  position: relative;
  overflow: hidden;
}
.metric-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--metric-gradient, linear-gradient(135deg, var(--accent-blue), var(--accent-purple)));
  opacity: 0;
  transition: opacity 0.2s;
}
.metric-card:hover { border-color: var(--border-glow); transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.metric-card:hover::before { opacity: 1; }

.metric-value {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  background: var(--metric-gradient, linear-gradient(135deg, var(--accent-blue), var(--accent-purple)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}
.metric-label { font-size: 0.68rem; color: var(--text-3); margin-top: 5px; font-weight: 500; }

.achievements-list { display: flex; flex-direction: column; gap: 8px; }
.achievement-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 11px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.55;
  transition: all 0.2s;
}
.achievement-item:hover {
  border-color: rgba(16,185,129,0.3);
  background: rgba(16,185,129,0.04);
  transform: translateX(4px);
}
.achievement-item::before {
  content: '✓';
  min-width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(16,185,129,0.15);
  color: var(--accent-green);
  font-weight: 700;
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
  flex-shrink: 0;
}

.modal-tech-groups { display: flex; flex-direction: column; gap: 14px; }
.modal-tech-group-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 7px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.modal-tech-group-label::before { content: ''; width: 16px; height: 1px; background: var(--accent-blue); opacity: 0.4; }
.modal-tech-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.modal-tech-tag {
  font-size: 0.775rem;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-2);
  transition: all 0.2s;
}
.modal-tech-tag:hover { background: rgba(0,200,255,0.08); border-color: rgba(0,200,255,0.25); color: var(--text-1); }

.expandable-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 8px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.expandable-item:hover { border-color: var(--border-glow); }
.expandable-item.open { border-color: rgba(0,200,255,0.25); box-shadow: 0 4px 20px rgba(0,200,255,0.06); }

.expandable-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  background: var(--bg-elevated);
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-1);
  gap: 12px;
  transition: all 0.2s;
}
.expandable-trigger:hover { background: var(--bg-hover); }
.expandable-item.open .expandable-trigger { background: rgba(0,200,255,0.06); color: var(--accent-blue); }
.expandable-trigger-left { display: flex; align-items: center; gap: 10px; }
.expandable-trigger-left i { color: var(--accent-blue); font-size: 0.85rem; width: 16px; text-align: center; }
.expandable-chevron { color: var(--text-3); font-size: 0.75rem; transition: transform 0.3s var(--ease-spring); flex-shrink: 0; }
.expandable-item.open .expandable-chevron { transform: rotate(180deg); color: var(--accent-blue); }

.expandable-content { max-height: 0; overflow: hidden; transition: max-height 0.4s var(--ease-smooth); }
.expandable-item.open .expandable-content { max-height: 600px; }
.expandable-body {
  padding: 16px 18px;
  font-size: 0.86rem;
  color: var(--text-2);
  line-height: 1.8;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
}

.modal-links { display: flex; gap: 8px; flex-wrap: wrap; }
.modal-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
  text-decoration: none;
}
.modal-link-btn:hover { border-color: var(--border-glow); color: var(--accent-blue); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0,200,255,0.15); }
.modal-link-btn.primary { background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple)); color: white; border-color: transparent; box-shadow: 0 4px 16px rgba(0,200,255,0.25); }
.modal-link-btn.primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,200,255,0.4); opacity: 0.95; }
.modal-link-btn.disabled { opacity: 0.35; cursor: not-allowed; }
.modal-link-btn.disabled:hover { transform: none; box-shadow: none; }

/* ── SKILLS SECTION ──────────────────────────────────────── */
#skills { padding: 100px 0; }

.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

.skill-group {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  transition: all 0.3s;
}
.skill-group:hover { border-color: var(--border-glow); box-shadow: var(--shadow); transform: translateY(-2px); }

.skill-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.skill-group-icon {
  width: 34px; height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
}
.icon-blue   { background: rgba(0, 200, 255, 0.15); color: var(--accent-blue); }
.icon-green  { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.icon-purple { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.icon-orange { background: rgba(245, 158, 11, 0.15); color: var(--accent-orange); }
.icon-teal   { background: rgba(20, 184, 166, 0.15); color: var(--accent-teal); }
.icon-red    { background: rgba(239, 68, 68, 0.15); color: var(--accent-red); }
.icon-cyan   { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.icon-pink   { background: rgba(236, 72, 153, 0.15); color: var(--accent-pink); }

.skill-group-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-1);
}

.skill-tags { display: flex; gap: 6px; flex-wrap: wrap; }

.skill-tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 8px;
  background: var(--bg-elevated);
  color: var(--text-2);
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.skill-tag:hover { color: var(--text-1); border-color: var(--border-glow); transform: translateY(-1px); }

/* ── CONTACT SECTION ─────────────────────────────────────── */
#contact { padding: 100px 0; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.contact-info p {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-items { display: flex; flex-direction: column; gap: 14px; margin-bottom: 32px; }

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 0.875rem;
  color: var(--text-2);
  transition: all 0.2s;
}
.contact-item:hover { border-color: var(--border-glow); color: var(--text-1); }

.contact-item-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(0, 200, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.social-links { display: flex; gap: 10px; }

.social-link {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 1.1rem;
  transition: all 0.25s var(--ease-spring);
  cursor: pointer;
}
.social-link:hover { transform: translateY(-3px); border-color: var(--border-glow); color: var(--text-1); }

/* Contact Form */
.contact-form-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
}

.form-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 11px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus, .form-textarea:focus {
  border-color: var(--border-glow);
  box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.1);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-3); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.form-submit { width: 100%; margin-top: 8px; justify-content: center; padding: 13px; }

.form-status {
  display: none;
  text-align: center;
  margin-top: 12px;
  font-size: 0.875rem;
  padding: 10px;
  border-radius: 8px;
}
.form-status.success { display: block; background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.form-status.error   { display: block; background: rgba(239, 68, 68, 0.1); color: var(--accent-red); }

/* ── FOOTER ──────────────────────────────────────────────── */
footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-brand {
  font-size: 1rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-copy { font-size: 0.8rem; color: var(--text-3); }

/* ── ANIMATIONS & SCROLL REVEAL ──────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-smooth), transform 0.6s var(--ease-smooth);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .journey-grid { grid-template-columns: 1fr; }
  .profile-card { position: static; max-width: 480px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .hero-stats { gap: 24px; }

  /* Projects — filters wrap to 2 rows, full width */
  .projects-controls { flex-direction: column; align-items: stretch; gap: 12px; }

  .filter-tabs-wrap { overflow: visible; }

  .filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 0;
    background: transparent;
    border-radius: 0;
  }

  .filter-tab {
    padding: 7px 14px;
    font-size: 0.78rem;
    border-radius: 20px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    flex-shrink: 0;
  }

  .filter-tab.active {
    background: var(--bg-surface);
    border-color: var(--border-glow);
    box-shadow: none;
  }

  .filter-count {
    font-size: 0.62rem;
    padding: 1px 5px;
  }

  .search-box { width: 100%; }

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

  /* Pagination on mobile */
  .pagination { flex-direction: column; align-items: center; gap: 10px; }
  .page-info { font-size: 0.75rem; }
  .page-btn { min-width: 34px; height: 34px; font-size: 0.8rem; }

  /* Modal full width on mobile */
  .modal-panel { width: 100vw; }
  .modal-header { padding: 24px 20px 18px; }
  .modal-body { padding: 0 20px 32px; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .modal-status-row { flex-direction: column; gap: 0; }
  .modal-status-item:not(:last-child) { border-right: none; border-bottom: 1px solid var(--border); }

  /* Journey */
  .journey-grid { grid-template-columns: 1fr; }
  .profile-card { position: static; max-width: 100%; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .section-pad { padding: 60px 0; }
  .section-title { font-size: 1.75rem; }

  .hero-name { font-size: 2.2rem; }
  .hero-ctas { flex-direction: column; width: 100%; }
  .hero-ctas .btn { justify-content: center; }
  .hero-stats { gap: 16px; }
  .hero-stat-value { font-size: 1.4rem; }

  /* Even smaller filter pills on very small screens */
  .filter-tab { padding: 6px 11px; font-size: 0.75rem; }

  /* Project cards — tighten padding */
  .project-card-header { padding: 14px 14px 0; }
  .project-card-body { padding: 0 14px 14px; }
  .project-title { font-size: 0.95rem; }

  /* Modal */
  .modal-header { padding: 20px 16px 16px; }
  .modal-body { padding: 0 16px 28px; }
  .modal-title { font-size: 1.15rem; }
  .metrics-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .metric-value { font-size: 1.2rem; }

  /* Certs */
  .certs-grid { grid-template-columns: 1fr; }

  /* Pagination */
  .page-btns { gap: 4px; }
  .page-btn { min-width: 30px; height: 30px; font-size: 0.75rem; padding: 0 7px; }
}

/* ── LOADING STATE ───────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-hover) 50%, var(--bg-elevated) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── UTILITY ─────────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 60px 0;
}

/* ── CERTIFICATIONS ──────────────────────────────────────── */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.cert-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: all 0.3s;
}
.cert-card:hover { border-color: var(--border-glow); transform: translateY(-2px); box-shadow: var(--shadow); }

.cert-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.cert-title {
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.3;
  margin-bottom: 4px;
}

.cert-issuer {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-bottom: 5px;
}

.cert-year {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--accent-blue);
  background: rgba(0, 200, 255, 0.08);
  padding: 2px 8px;
  border-radius: 20px;
  display: inline-block;
}

/* ── TEAM MEMBER LINKS ───────────────────────────────────── */
.team-member-links { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }

.team-member-chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 2px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  transition: all 0.2s;
  cursor: default;
}
.team-member-chip:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 8px rgba(0,200,255,0.2);
}

.chip-avatar {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

/* Tooltip */
.chip-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-base);
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  padding: 8px 12px;
  white-space: nowrap;
  font-size: 0.75rem;
  color: var(--text-1);
  box-shadow: var(--shadow);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 100;
}
.chip-tooltip::after {
  content: '';
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--border-glow);
}
.team-member-chip:hover .chip-tooltip { opacity: 1; pointer-events: all; }

.chip-tooltip-name {
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 4px;
}

.chip-social-links { display: flex; gap: 8px; }
.chip-social-links a {
  font-size: 0.75rem;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s;
}
.chip-social-links a:hover { color: var(--accent-blue); }

/* ── CURRENT ROLE INDICATOR ──────────────────────────────── */
.timeline-current-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 2px 10px;
  border-radius: 20px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-left: 8px;
}
.timeline-current-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse-status 2s infinite;
}

.type-green { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }