/* ==========================================================================
   JEEVAN BAGADE — CERTIFIED CYBERSECURITY & TECHNOLOGY TRAINER
   Design System: Clay White Luxury & 3D Interactive UI
   ========================================================================== */

/* ==== 1. DESIGN TOKENS & CLAY WHITE PALETTE ============================== */
:root {
  /* Canvas & Surfaces */
  --bg-clay: #f1f5f9;
  --bg-clay-soft: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-card-elevated: #ffffff;
  --bg-tinted: #eef2f6;

  /* Accents */
  --primary: #0284c7;
  --primary-gradient: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  --primary-light: rgba(2, 132, 199, 0.08);
  --primary-border: rgba(2, 132, 199, 0.25);
  
  --accent-purple: #6366f1;
  --accent-emerald: #10b981;
  --accent-emerald-light: rgba(16, 185, 129, 0.1);
  --accent-amber: #f59e0b;

  /* Typography Colors */
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --text-dim: #94a3b8;

  /* Clay Shadows (Tactile & Pillowy) */
  --shadow-clay-sm: 0 4px 12px -2px rgba(100, 116, 139, 0.08), 0 0 0 1px rgba(226, 232, 240, 0.7);
  --shadow-clay: 0 12px 28px -6px rgba(100, 116, 139, 0.12), 0 2px 6px -1px rgba(100, 116, 139, 0.04), 0 0 0 1px rgba(226, 232, 240, 0.8), inset 0 1px 2px rgba(255, 255, 255, 0.95);
  --shadow-clay-hover: 0 20px 38px -10px rgba(100, 116, 139, 0.2), 0 4px 12px -2px rgba(100, 116, 139, 0.08), 0 0 0 1px rgba(2, 132, 199, 0.3), inset 0 1px 2px rgba(255, 255, 255, 1);
  --shadow-btn: 0 8px 22px -4px rgba(2, 132, 199, 0.38);

  /* Borders */
  --border-clay: #e2e8f0;
  --border-clay-hover: #38bdf8;

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

  /* Sizing & Layout */
  --container-max: 1200px;
  --header-height: 4.25rem;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;

  /* Transitions */
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.2s;
  --dur-normal: 0.35s;
}

/* ==== 2. RESET & BASE ==================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
  background-color: var(--bg-clay);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body {
  position: relative;
  background-color: var(--bg-clay);
  color: var(--text-body);
  overflow-x: hidden;
  min-height: 100vh;
}

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

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

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

ul, ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

::selection {
  background: rgba(2, 132, 199, 0.15);
  color: var(--text-dark);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-clay);
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--primary);
  color: #ffffff;
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top var(--dur-fast);
}
.skip-link:focus {
  top: 1rem;
}

/* ==== 3. CLAY WHITE ATMOSPHERE & BACKGROUNDS ============================= */
#webgl-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.65;
}

.clay-grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(rgba(148, 163, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
  z-index: 1;
  pointer-events: none;
  opacity: 0.7;
}

.mouse-glow-follower {
  position: fixed;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.05) 0%, rgba(99, 102, 241, 0.02) 40%, transparent 70%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 1;
  will-change: transform;
}

.ambient-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}
.orb-1 {
  width: 450px;
  height: 450px;
  background: #bae6fd;
  top: 5%;
  right: -80px;
}
.orb-2 {
  width: 500px;
  height: 500px;
  background: #e0e7ff;
  bottom: 10%;
  left: -100px;
}

/* ==== 4. SCROLL PROGRESS BAR ============================================= */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, #0284c7, #38bdf8, #6366f1);
  z-index: 9999;
  box-shadow: 0 0 8px rgba(2, 132, 199, 0.4);
}

/* ==== 5. LAYOUT & CONTAINERS ============================================= */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  position: relative;
  z-index: 2;
}

.section {
  position: relative;
  padding-top: 4.5rem;
  padding-bottom: 4.5rem;
  z-index: 2;
}

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 2.5rem;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-dark);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-title .gradient-text {
  background: linear-gradient(135deg, var(--text-dark) 40%, var(--primary) 85%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ==== 6. CLAYMORPHIC CARDS & PANELS ====================================== */
.clay-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-clay);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur-normal) var(--ease-smooth),
              box-shadow var(--dur-normal) var(--ease-smooth);
}

.clay-card:hover {
  box-shadow: var(--shadow-clay-hover);
}

.clay-card-interactive {
  will-change: transform;
  transform-style: preserve-3d;
}

/* ==== 7. BUTTONS & CHIPS ================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--dur-normal) var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: var(--shadow-btn);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -4px rgba(2, 132, 199, 0.5);
  color: #ffffff;
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-dark);
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
}

.btn-secondary:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  transform: translateY(-2px);
  color: var(--primary);
}

.btn-terminal {
  background: var(--accent-emerald-light);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #065f46;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
}

.btn-terminal:hover {
  background: rgba(16, 185, 129, 0.18);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
}

.btn-block {
  width: 100%;
}

/* ==== 8. HEADER / NAVBAR (CLAY WHITE) ==================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background-color var(--dur-normal), box-shadow var(--dur-normal);
}

.site-header.scrolled {
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: 0 8px 24px -4px rgba(100, 116, 139, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-badge {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--primary);
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  background: #ffffff;
  padding: 0.3rem 0.4rem;
  border-radius: 999px;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
}

.nav-link {
  padding: 0.4rem 0.9rem;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 999px;
  transition: all var(--dur-fast);
}

.nav-link:hover {
  color: var(--text-dark);
}

.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.audio-toggle-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--dur-fast);
}
.audio-toggle-btn:hover {
  color: var(--primary);
  border-color: #cbd5e1;
}
.audio-toggle-btn.active {
  color: var(--accent-emerald);
  border-color: var(--accent-emerald);
  background: var(--accent-emerald-light);
}

.nav-mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
  color: var(--text-dark);
  align-items: center;
  justify-content: center;
}

.mobile-nav-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  background: rgba(248, 250, 252, 0.98);
  backdrop-filter: blur(24px);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--dur-normal) var(--ease-smooth), opacity var(--dur-normal);
  z-index: 999;
}

.mobile-nav-drawer.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  display: flex;
  justify-content: space-between;
}

/* ==== 9. HERO SECTION (CLAY WHITE) ======================================= */
.hero-section {
  position: relative;
  padding-top: calc(var(--header-height) + 2rem);
  padding-bottom: 3.5rem;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 3.8vw, 3.3rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.hero-title .title-lead {
  display: block;
  font-size: 0.42em;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  font-family: var(--font-mono);
  margin-bottom: 0.35rem;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  max-width: 580px;
}

.hero-tagline strong {
  color: var(--text-dark);
}

.hero-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-dark);
  background: #ffffff;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
}

.hero-meta-item svg {
  color: var(--primary);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid #e2e8f0;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-weight: 500;
}

/* Hero Portrait Frame (Claymorphic) */
.hero-visual-card {
  max-width: 420px;
  margin: 0 auto;
  width: 100%;
}

.hero-portrait-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: #ffffff;
  padding: 0.75rem;
  box-shadow: var(--shadow-clay);
  border: 1px solid var(--border-clay);
}

.portrait-inner {
  position: relative;
  border-radius: calc(var(--radius-xl) - 8px);
  overflow: hidden;
  aspect-ratio: 3/4;
  background: #e2e8f0;
}

.portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
  transition: transform var(--dur-normal) var(--ease-smooth);
}

.hero-portrait-frame:hover .portrait-img {
  transform: scale(1.03);
}

/* Tagline badge on photo */
.portrait-badge-tagline {
  position: absolute;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.55rem 1.25rem;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
  white-space: nowrap;
}

.badge-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
}

/* ==== 10. MARQUEE STRIP (CLAY WHITE) ===================================== */
.marquee-container {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 0.9rem 0;
  background: #ffffff;
  border-top: 1px solid var(--border-clay);
  border-bottom: 1px solid var(--border-clay);
  box-shadow: 0 2px 8px rgba(100, 116, 139, 0.04);
  z-index: 2;
}

.marquee-track {
  display: flex;
  gap: 2rem;
  width: max-content;
  animation: scrollMarquee 32s linear infinite;
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-body);
  text-transform: uppercase;
  white-space: nowrap;
}

.marquee-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

@keyframes scrollMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ==== 11. INTERACTIVE CYBER TERMINAL ===================================== */
.terminal-wrapper {
  max-width: 860px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  background: #0f172a;
  border: 1px solid #1e293b;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.35);
  overflow: hidden;
  font-family: var(--font-mono);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.25rem;
  background: #1e293b;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.terminal-controls {
  display: flex;
  gap: 0.4rem;
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-title {
  font-size: 0.8rem;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.terminal-body {
  padding: 1.35rem;
  max-height: 380px;
  overflow-y: auto;
  font-size: 0.85rem;
  line-height: 1.65;
  color: #cbd5e1;
}

.terminal-intro {
  color: #94a3b8;
  margin-bottom: 1rem;
}

.terminal-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.term-chip {
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #38bdf8;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  transition: all var(--dur-fast);
}

.term-chip:hover {
  background: rgba(56, 189, 248, 0.25);
  color: #ffffff;
}

.terminal-output {
  margin-bottom: 0.85rem;
}

.terminal-entry {
  margin-bottom: 0.85rem;
}

.terminal-cmd-echo {
  color: #ffffff;
  display: flex;
  gap: 0.45rem;
}

.terminal-prompt-user { color: #34d399; }
.terminal-prompt-path { color: #38bdf8; }

.terminal-response {
  color: #e2e8f0;
  padding-left: 1rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  outline: none;
}

/* ==== 12. ABOUT SECTION ================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
}

.about-card-main {
  padding: 2.25rem;
}

.about-lead {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-dark);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.about-lead strong {
  color: var(--primary);
  font-weight: 700;
}

.about-body p {
  color: var(--text-body);
  margin-bottom: 1rem;
  font-size: 0.98rem;
  line-height: 1.7;
}

.about-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-clay);
}

.pillar-item {
  padding: 1rem;
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
}

.pillar-item svg {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.pillar-item h4 {
  font-size: 0.92rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.25rem;
}

.pillar-item p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.facts-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.facts-panel {
  padding: 2rem;
}

.facts-panel h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.facts-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.fact-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-clay);
}
.fact-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.fact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
}

.fact-value {
  font-size: 0.95rem;
  color: var(--text-dark);
  font-weight: 600;
}

.languages-box {
  padding: 1.5rem;
}

.lang-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.65rem;
  margin-top: 0.85rem;
}

.lang-pill {
  text-align: center;
  padding: 0.6rem 0.4rem;
  border-radius: var(--radius-sm);
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
}

.lang-name {
  display: block;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-dark);
}

.lang-level {
  display: block;
  font-size: 0.72rem;
  color: var(--primary);
  font-family: var(--font-mono);
  font-weight: 600;
}

/* ==== 13. SKILLS MATRIX & LAB MODULES (CLAY WHITE) ======================= */
.skills-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.filter-btn {
  padding: 0.5rem 1.15rem;
  border-radius: 999px;
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--dur-fast);
}

.filter-btn:hover {
  background: #f8fafc;
  color: var(--text-dark);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}

.skills-search-wrap {
  position: relative;
  min-width: 260px;
}

.skills-search-input {
  width: 100%;
  padding: 0.6rem 1rem 0.6rem 2.3rem;
  border-radius: 999px;
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
  color: var(--text-dark);
  font-size: 0.85rem;
}

.skills-search-input:focus {
  border-color: var(--primary);
  outline: none;
}

.skills-search-wrap svg {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-card {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.skill-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.skill-icon-wrap {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.skill-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--accent-emerald-light);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #065f46;
}

.skill-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.45rem;
}

.skill-desc {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: auto;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: #ffffff;
  border: 1px solid var(--border-clay);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  color: var(--text-body);
}

/* ==== 14. CREDENTIALS (CLAY WHITE) ======================================= */
.cred-layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.cred-column {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cred-col-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.65rem;
  border-bottom: 2px solid var(--border-clay);
}

.cred-item-card {
  padding: 1.5rem;
}

.cred-item-card h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.3rem;
}

.cred-issuer {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary);
  font-family: var(--font-mono);
  margin-bottom: 0.55rem;
  display: block;
}

.cred-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ==== 15. INTERACTIVE ESTIMATOR ========================================== */
.estimator-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: start;
}

.estimator-controls {
  padding: 2rem;
}

.calc-group {
  margin-bottom: 1.5rem;
}
.calc-group:last-child {
  margin-bottom: 0;
}

.calc-label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
}

.calc-btn-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.55rem;
}

.calc-choice-btn {
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 600;
  text-align: center;
  transition: all var(--dur-fast);
}

.calc-choice-btn:hover {
  background: #f8fafc;
  color: var(--text-dark);
}

.calc-choice-btn.selected {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
}

.estimator-preview {
  padding: 2rem;
  background: #ffffff;
}

.preview-header {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-clay);
  margin-bottom: 1.25rem;
}

.preview-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-emerald);
  text-transform: uppercase;
}

.preview-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-top: 0.25rem;
}

.preview-deliverables {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.deliv-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-size: 0.88rem;
  color: var(--text-body);
}

.deliv-row svg {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.estimator-action-box {
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-clay);
}

/* ==== 16. ON-CAMPUS PHOTO GALLERY ======================================== */
.gallery-filter-bar {
  display: flex;
  justify-content: center;
  gap: 0.55rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.gallery-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
  cursor: pointer;
  box-shadow: var(--shadow-clay);
  border: 1px solid var(--border-clay);
  background: #ffffff;
}

.gallery-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-normal) var(--ease-smooth);
}

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

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 35%, rgba(15, 23, 42, 0.88) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.25rem;
}

.gallery-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  color: #38bdf8;
  margin-bottom: 0.2rem;
}

.gallery-caption {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 700;
  color: #ffffff;
}

.gallery-date {
  font-size: 0.74rem;
  color: #cbd5e1;
  font-family: var(--font-mono);
}

/* Lightbox Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(20px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-normal);
}

.lightbox-modal.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  position: relative;
  max-width: 860px;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
  background: #0f172a;
}

.lightbox-img-wrap {
  width: 100%;
  max-height: 65vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

.lightbox-img-wrap img {
  max-height: 65vh;
  object-fit: contain;
}

.lightbox-footer {
  padding: 1rem 1.25rem;
  background: #0f172a;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lightbox-close-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.lightbox-nav-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==== 17. ENGAGEMENT MODELS (CLAY WHITE) ================================= */
.engage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.engage-card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
}

.engage-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 1.25rem;
}

.engage-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.engage-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-clay);
}

.check-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-body);
}

.check-item svg {
  color: var(--accent-emerald);
  flex-shrink: 0;
}

.terms-banner {
  margin-top: 2.5rem;
  padding: 2.25rem;
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow-clay);
  border: 1px solid var(--border-clay);
}

.terms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.term-block h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.45rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.term-block p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==== 18. FAQ SECTION (CLAY WHITE) ======================================= */
.faq-grid {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.faq-item {
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
  overflow: hidden;
  transition: all var(--dur-fast);
}

.faq-question {
  width: 100%;
  padding: 1.2rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
}

.faq-icon-arrow {
  transition: transform var(--dur-normal);
  color: var(--primary);
}

.faq-item.active .faq-icon-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-normal) var(--ease-smooth), padding var(--dur-normal);
  padding: 0 1.4rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.faq-item.active .faq-answer {
  max-height: 250px;
  padding-bottom: 1.4rem;
}

/* ==== 19. CONTACT HUB & BOOKING (CLAY WHITE) ============================= */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  align-items: start;
}

.contact-card-direct {
  padding: 2.25rem;
}

.contact-card-direct h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
}

.contact-card-direct p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.channel-link {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1.15rem;
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: var(--shadow-clay-sm);
  border: 1px solid var(--border-clay);
  transition: all var(--dur-fast);
}

.channel-link:hover {
  border-color: var(--primary);
  transform: translateX(4px);
  box-shadow: 0 8px 20px -4px rgba(100, 116, 139, 0.15);
}

.channel-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.channel-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
}

.channel-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
}

.contact-form-panel {
  padding: 2.25rem;
}

.form-field-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.4rem;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.8rem 1.1rem;
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-clay);
  color: var(--text-dark);
  font-size: 0.9rem;
  transition: all var(--dur-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
  outline: none;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.85rem;
  text-align: center;
}

/* ==== 20. FOOTER (CLAY WHITE) ============================================ */
.site-footer {
  position: relative;
  border-top: 1px solid var(--border-clay);
  background: #ffffff;
  padding: 3.5rem 0 2.25rem;
  z-index: 2;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand-bio {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  max-width: 380px;
  margin-top: 0.75rem;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: color var(--dur-fast);
}

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

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-clay);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-ist-clock {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--primary);
}

/* ==== 21. RESPONSIVE BREAKPOINTS ========================================= */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-grid, .estimator-container, .contact-grid {
    grid-template-columns: 1fr;
  }
  .skills-grid, .cred-layout, .engage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .terms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }
  .nav-mobile-toggle {
    display: flex;
  }
  .hero-stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .skills-grid, .cred-layout, .engage-grid, .gallery-grid, .terms-grid {
    grid-template-columns: 1fr;
  }
  .about-pillars {
    grid-template-columns: 1fr;
  }
  .form-row-2 {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
}