/* ==========================================================================
   TSD® / EXPERIMENT STUDIO — SWISS EDITORIAL & MODERN CREATIVE PORTFOLIO
   Student Workspace: Aditya Wandhare (UID 24010027)
   ========================================================================== */

:root {
  /* Color System */
  --bg-primary: #090A0D;
  --bg-surface: #0E1015;
  --bg-surface-elevated: #14171E;
  --bg-surface-hover: #181C25;
  --bg-card: #0F1116;
  
  --ink-primary: #FFFFFF;
  --ink-secondary: #9FA6B6;
  --ink-muted: #5C6272;
  --ink-subtle: #2E3340;
  
  --electric-lime: #CEFF00;
  --electric-lime-glow: rgba(206, 255, 0, 0.18);
  --electric-lime-subtle: rgba(206, 255, 0, 0.08);
  
  --border-hairline: #1D212A;
  --border-medium: #272C38;
  --border-focus: #CEFF00;
  
  --green-status: #10B981;
  
  /* Typography */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-editorial: 'Syne', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Transitions */
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.18s ease;
  --transition-smooth: 0.24s var(--ease-expo);
}

/* Base & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--ink-primary);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--ink-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
}

/* Background Technical Grid */
.technical-grid-bg {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  z-index: 0;
}

/* App Container Layout */
.app-layout {
  position: relative;
  z-index: 1;
  max-width: 1560px;
  margin: 0 auto;
  border-left: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.lime-text {
  color: var(--electric-lime) !important;
}

/* ==========================================================================
   1. Refined Top Navigation Bar
   ========================================================================== */
.top-nav {
  height: 56px;
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  background-color: rgba(9, 10, 13, 0.92);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-brand .brand-link {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--ink-primary);
}

.brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: 0.04em;
  color: var(--ink-primary);
}

.registered-symbol {
  font-size: 9px;
  vertical-align: super;
  color: var(--ink-muted);
}

.brand-sep {
  color: var(--ink-subtle);
  font-family: var(--font-mono);
  font-size: 13px;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--ink-secondary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-item {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink-secondary);
  text-decoration: none;
  padding: 6px 12px;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-item:hover {
  color: var(--ink-primary);
}

.nav-item.is-active {
  color: var(--ink-primary);
}

.nav-item.is-active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 12px;
  right: 12px;
  height: 2px;
  background-color: var(--electric-lime);
  box-shadow: 0 0 8px var(--electric-lime);
}

.dot-sep {
  color: var(--ink-subtle);
  font-size: 9px;
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-secondary);
}

.status-indicator-dot {
  width: 7px;
  height: 7px;
  background-color: var(--electric-lime);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--electric-lime);
  animation: pulse-glow 2.5s infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

/* ==========================================================================
   2. Hero Section
   ========================================================================== */
.hero-section {
  display: grid;
  grid-template-columns: 1.15fr 1.05fr 0.8fr;
  border-bottom: 1px solid var(--border-hairline);
  min-height: 250px;
  background-color: var(--bg-surface);
}

/* Left Hero Column: Headline */
.hero-headline-col {
  padding: 24px 32px 20px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--border-hairline);
}

.hero-display-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 4.4vw, 4.2rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin: 0;
}

.headline-row {
  display: block;
}

.row-white {
  color: #FFFFFF;
}

.row-lime {
  color: var(--electric-lime);
  display: flex;
  align-items: baseline;
}

.blinking-cursor {
  display: inline-block;
  margin-left: 2px;
  color: var(--electric-lime);
  animation: cursor-blink 1s infinite steps(2, start);
}

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

.hero-meta-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
}

.slash-div {
  color: var(--ink-subtle);
}

/* Center Hero Column: Upgraded Floating Browser & Fragments Composition */
.hero-graphic-col {
  padding: 18px 24px;
  border-right: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #0B0D12;
  position: relative;
  overflow: hidden;
}

.hero-blueprint-stage {
  position: relative;
  width: 100%;
  max-width: 440px;
  height: 215px;
}

.blueprint-card {
  position: absolute;
  border-radius: 4px;
}

/* 1. Wireframe Sheet (Background Blueprint) */
.wireframe-sheet {
  top: 10px;
  left: 18px;
  width: 250px;
  height: 155px;
  background-color: #0E1117;
  border: 1px solid #202636;
  z-index: 1;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
}

.bp-header {
  height: 22px;
  background-color: #0A0C10;
  border-bottom: 1px solid #1E2331;
  display: flex;
  align-items: center;
  padding: 0 8px;
  gap: 5px;
}

.bp-dots span {
  display: inline-block;
  width: 4.5px;
  height: 4.5px;
  border-radius: 50%;
  background-color: #2B3244;
  margin-right: 3px;
}

.bp-filename {
  font-family: var(--font-mono);
  font-size: 8.5px;
  color: #5A647B;
  margin-left: 4px;
}

.bp-body {
  padding: 8px;
  display: flex;
  gap: 8px;
  height: calc(100% - 22px);
}

.bp-cross-box {
  width: 90px;
  height: 70px;
  border: 1px solid #1F2535;
  background-color: #080A0E;
}

.bp-cross-svg {
  width: 100%;
  height: 100%;
}

.bp-lines-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.bp-line {
  height: 4px;
  background-color: #1A202D;
  border-radius: 1px;
}

.bp-line.l-long { width: 95%; }
.bp-line.l-med { width: 70%; }
.bp-line.l-short { width: 45%; }

.bp-grid-mini {
  display: flex;
  gap: 4px;
  margin-top: 4px;
}

.bp-cell {
  flex: 1;
  height: 26px;
  background-color: #121620;
  border: 1px solid #1F2535;
  border-radius: 2px;
}

/* 2. Stacking Layer Accents */
.lime-accent-card {
  top: 32px;
  right: 56px;
  width: 76px;
  height: 52px;
  background-color: var(--electric-lime);
  border-radius: 2px;
  z-index: 2;
  transform: rotate(3.5deg);
  box-shadow: 0 10px 24px rgba(206, 255, 0, 0.22);
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 5px 7px;
}

.lime-card-tag {
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 800;
  color: #090A0D;
}

.slate-accent-card {
  top: 46px;
  right: 42px;
  width: 80px;
  height: 56px;
  background-color: #161A25;
  border: 1px solid #283042;
  border-radius: 2px;
  z-index: 3;
  transform: rotate(-2deg);
}

/* 3. Foreground Code Terminal Card */
.code-terminal-card {
  bottom: 8px;
  left: 60px;
  width: 300px;
  background-color: #07090D;
  border: 1px solid #282E3E;
  z-index: 4;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.75);
}

.terminal-bar {
  height: 23px;
  background-color: #10131B;
  border-bottom: 1px solid #212635;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
}

.term-traffic-dots {
  display: flex;
  gap: 4px;
}

.tdot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.tdot.red { background-color: #EF4444; }
.tdot.yellow { background-color: #F59E0B; }
.tdot.green { background-color: #10B981; }

.term-title-file {
  font-family: var(--font-mono);
  font-size: 8.5px;
  color: #727D95;
}

.term-status-pill {
  font-family: var(--font-mono);
  font-size: 7px;
  font-weight: 700;
  color: var(--electric-lime);
  background-color: rgba(206, 255, 0, 0.1);
  padding: 1px 4px;
  border-radius: 1px;
}

.terminal-code-body {
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.5;
  color: #E2E8F0;
  overflow: hidden;
}

.code-comment { color: #525C72; }
.code-kw { color: #818CF8; }
.code-fn { color: #38BDF8; }
.code-var { color: #F1F5F9; }
.code-prop { color: #93C5FD; }
.code-str { color: #FDE047; }
.code-num { color: #FB923C; }
.code-lime { color: var(--electric-lime); font-weight: 700; }

/* Grid Technical Corner Marks */
.tech-cross-mark {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #2E3546;
  pointer-events: none;
}
.tech-cross-mark.t-left { top: 0; left: 0; }
.tech-cross-mark.t-right { top: 0; right: 0; }
.tech-cross-mark.b-left { bottom: 0; left: 0; }
.tech-cross-mark.b-right { bottom: 0; right: 0; }

/* Right Hero Column: Context & Real Statistics */
.hero-context-col {
  padding: 24px 32px 20px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.context-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: space-between;
}

.context-label-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 2px solid var(--electric-lime);
  padding-left: 12px;
}

.context-pill {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink-primary);
}

.context-sub {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
}

.context-quote {
  font-family: var(--font-editorial);
  font-size: 16px;
  line-height: 1.35;
  color: #D1D5DB;
  font-weight: 700;
  margin: 12px 0;
}

.btn-enter-workspace {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: transparent;
  border: 1px solid var(--border-medium);
  color: var(--ink-primary);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.btn-enter-workspace:hover {
  background-color: var(--electric-lime);
  border-color: var(--electric-lime);
  color: #090A0D;
  box-shadow: 0 4px 16px var(--electric-lime-glow);
}

.btn-enter-workspace:hover .btn-arrow-icon {
  transform: translate(2px, -2px);
}

.context-footer-metrics {
  display: flex;
  gap: 20px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-hairline);
}

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

.m-val {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--electric-lime);
}

.m-lbl {
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
}

/* ==========================================================================
   3. Section Divider Bar
   ========================================================================== */
.section-divider-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 32px;
  background-color: #0A0C0F;
  border-bottom: 1px solid var(--border-hairline);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.divider-title-group {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}

.sec-label-white { color: var(--ink-primary); }
.sec-label-lime { color: var(--electric-lime); }
.slash-dim { color: var(--ink-subtle); }

.divider-filter-tabs {
  display: flex;
  gap: 6px;
}

.filter-tab {
  background: transparent;
  border: 1px solid var(--border-hairline);
  color: var(--ink-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 2px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  border-color: var(--border-medium);
  color: var(--ink-primary);
}

.filter-tab.is-active {
  background-color: var(--electric-lime);
  border-color: var(--electric-lime);
  color: #090A0D;
  font-weight: 700;
}

.divider-status-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 10px;
  color: var(--ink-muted);
}

.sync-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--green-status);
}

/* ==========================================================================
   4. Refined Experiment Gallery Hierarchy
   (1 Featured + 2 Medium + 3 Compact in Final Row)
   ========================================================================== */
.gallery-bento-grid {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background-color: var(--border-hairline);
  flex: 1;
}

/* Top Section: Featured (Spans 2 cols) + Medium Stack (Col 3) */
.gallery-top-tier {
  display: grid;
  grid-template-columns: 1.85fr 1.15fr;
  gap: 1px;
  background-color: var(--border-hairline);
}

.medium-cards-column {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 1px;
  background-color: var(--border-hairline);
}

/* Bottom Section: 3 Compact Cards in Final Row */
.gallery-bottom-tier {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background-color: var(--border-hairline);
}

/* Common Card Base Styles */
.exp-card {
  background-color: var(--bg-card);
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: background-color var(--transition-fast);
}

.exp-card:hover {
  background-color: var(--bg-surface-elevated);
}

/* Card Header */
.exp-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
}

.exp-index-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

/* Interactive Treatment: Project Number Shifts on Hover */
.index-num {
  display: inline-block;
  transition: transform 220ms var(--ease-expo), color 220ms ease;
}

.exp-card:hover .index-num {
  transform: translateX(4px);
  color: var(--electric-lime);
}

.index-title {
  color: var(--ink-primary);
}

.exp-meta-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--electric-lime);
  background-color: rgba(206, 255, 0, 0.1);
  padding: 2px 7px;
  border: 1px solid rgba(206, 255, 0, 0.25);
  border-radius: 2px;
}

.lime-live-indicator {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--electric-lime);
}

.exp-star-mark {
  color: var(--ink-muted);
  font-size: 14px;
  transition: color var(--transition-fast);
}

.exp-card:hover .exp-star-mark {
  color: var(--electric-lime);
}

/* Card Visual Frame: Real Screenshot Container */
.card-visual-frame {
  position: relative;
  overflow: hidden;
  border-radius: 3px;
  border: 1px solid #1E232F;
  background-color: #07080B;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

/* Interactive Treatment: Preview Image Scales Gently on Hover */
.card-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 240ms var(--ease-expo), filter 240ms ease;
}

.exp-card:hover .card-preview-img {
  transform: scale(1.035);
}

/* Featured Project Visual Frame */
.featured-frame {
  height: 250px;
  margin: 6px 0 14px 0;
}

.preview-browser-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 20px;
  background-color: rgba(9, 10, 13, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  padding: 0 8px;
  gap: 5px;
  z-index: 2;
}

.pb-dot {
  width: 4.5px;
  height: 4.5px;
  border-radius: 50%;
  background-color: #373E50;
}

.pb-title {
  font-family: var(--font-mono);
  font-size: 8px;
  color: #7A849B;
  margin-left: 6px;
}

.preview-hover-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(9, 10, 13, 0.55);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 3;
}

.hover-cta-badge {
  background-color: var(--electric-lime);
  color: #090A0D;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 7px 14px;
  border-radius: 2px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
  transform: translateY(4px);
  transition: transform var(--transition-fast);
}

.card-visual-frame:hover .preview-hover-overlay {
  opacity: 1;
}

.card-visual-frame:hover .hover-cta-badge {
  transform: translateY(0);
}

/* Medium Card Visual & Content */
.medium-card-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 4px 0 10px 0;
  flex: 1;
}

.medium-info {
  flex: 1;
}

.medium-frame {
  width: 125px;
  height: 82px;
  flex-shrink: 0;
}

/* Compact Card Visual & Content */
.compact-card-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 4px 0 10px 0;
  flex: 1;
}

.compact-info {
  flex: 1;
}

.compact-frame {
  width: 110px;
  height: 74px;
  flex-shrink: 0;
}

/* Interactive Treatment: Animated Lime Accent Beside Title on Hover */
.title-with-accent {
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
  transition: gap 200ms var(--ease-expo);
}

.title-lime-accent {
  width: 3px;
  height: 14px;
  background-color: var(--electric-lime);
  border-radius: 1px;
  opacity: 0;
  transform: scaleY(0);
  transform-origin: center;
  transition: transform 200ms var(--ease-expo), opacity 200ms ease;
  margin-right: 0;
  flex-shrink: 0;
}

.exp-card:hover .title-lime-accent {
  opacity: 1;
  transform: scaleY(1);
  margin-right: 7px;
}

.exp-full-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.25;
  color: #FFFFFF;
  transition: color var(--transition-fast);
}

.card-featured .exp-full-title {
  font-size: 17px;
}

.exp-card:hover .exp-full-title {
  color: var(--electric-lime);
}

.exp-tags-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  margin-top: 5px;
}

.tag-sep {
  color: var(--ink-subtle);
  font-size: 8.5px;
}

/* Giant Ghost Graphic Number (Watermark) */
.card-ghost-num {
  position: absolute;
  top: 8px;
  right: 14px;
  font-family: var(--font-display);
  font-size: 85px;
  font-weight: 800;
  line-height: 1;
  color: rgba(255, 255, 255, 0.03);
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.05);
  pointer-events: none;
  z-index: 1;
  transition: all var(--transition-smooth);
}

.exp-card:hover .card-ghost-num {
  color: rgba(206, 255, 0, 0.02);
  -webkit-text-stroke: 1px rgba(206, 255, 0, 0.16);
  transform: translateY(-3px);
}

/* Card Footer & Action Button */
.exp-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  position: relative;
  z-index: 2;
}

.compact-footer {
  justify-content: flex-end;
}

/* Interactive Treatment: OPEN EXPERIMENT ↗ Moves on Hover */
.btn-open-experiment {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  color: var(--ink-secondary);
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  padding: 4px 0;
  transition: color 200ms ease;
}

.btn-open-experiment svg {
  transition: transform 220ms var(--ease-expo);
}

.btn-open-experiment:hover,
.exp-card:hover .btn-open-experiment {
  color: var(--electric-lime);
}

.btn-open-experiment:hover svg,
.exp-card:hover .btn-open-experiment svg {
  transform: translate(3px, -3px);
}

/* ==========================================================================
   5. Bottom Footer Bar
   ========================================================================== */
.app-footer {
  height: 50px;
  border-top: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  background-color: #07080B;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.student-name {
  color: var(--ink-primary);
  font-weight: 700;
}

.foot-sep {
  color: var(--ink-subtle);
}

.student-uid {
  color: var(--ink-secondary);
}

.subtle-status-pill {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 9.5px;
  color: var(--ink-muted);
}

.tiny-green-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--green-status);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.footer-right .footer-motto {
  color: var(--ink-secondary);
  font-weight: 600;
}

/* ==========================================================================
   6. Live Interactive Modal Drawer
   ========================================================================== */
.interactive-drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(5, 6, 8, 0.88);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.interactive-drawer-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.drawer-panel {
  width: 95vw;
  max-width: 1500px;
  height: 92vh;
  background-color: #0B0D12;
  border: 1px solid var(--border-medium);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.8);
  transform: scale(0.98);
  transition: transform var(--transition-smooth);
  overflow: hidden;
}

.interactive-drawer-backdrop.is-open .drawer-panel {
  transform: scale(1);
}

.drawer-header {
  height: 54px;
  border-bottom: 1px solid var(--border-hairline);
  background-color: #0E1118;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.dh-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.dh-num-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  color: #090A0D;
  background-color: var(--electric-lime);
  padding: 2px 7px;
  border-radius: 2px;
}

.dh-title {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  color: #FFFFFF;
}

.dh-tags {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-muted);
}

.dh-viewport-controls {
  display: flex;
  align-items: center;
  background-color: #080A0E;
  border: 1px solid var(--border-hairline);
  border-radius: 3px;
  padding: 2px;
}

.vp-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: transparent;
  border: none;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.vp-btn:hover {
  color: var(--ink-primary);
}

.vp-btn.is-active {
  background-color: var(--bg-surface-elevated);
  color: var(--electric-lime);
}

.dh-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dh-btn-open-tab {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  background-color: transparent;
  border: 1px solid var(--border-medium);
  color: var(--ink-primary);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.dh-btn-open-tab:hover {
  background-color: var(--electric-lime);
  border-color: var(--electric-lime);
  color: #090A0D;
}

.dh-btn-close {
  background: transparent;
  border: 1px solid var(--border-hairline);
  color: var(--ink-secondary);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition-fast);
}

.dh-btn-close:hover {
  border-color: var(--electric-lime);
  color: var(--electric-lime);
}

.drawer-stage {
  flex: 1;
  background-color: #060709;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 12px;
}

.iframe-frame-container {
  width: 100%;
  height: 100%;
  background-color: #FFFFFF;
  border: 1px solid var(--border-hairline);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
  transition: width 0.35s var(--ease-expo);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.7);
}

.iframe-loading-bar {
  position: absolute;
  inset: 0;
  background-color: #0D0F15;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--ink-secondary);
  z-index: 10;
  transition: opacity 0.3s ease;
}

.iframe-loading-bar.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.loader-pulse {
  width: 32px;
  height: 3px;
  background-color: var(--electric-lime);
  animation: bar-load 1.2s infinite ease-in-out;
}

@keyframes bar-load {
  0% { transform: scaleX(0.2); }
  50% { transform: scaleX(1); }
  100% { transform: scaleX(0.2); }
}

#livePreviewIframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.drawer-inspector-bar {
  height: 36px;
  border-top: 1px solid var(--border-hairline);
  background-color: #0B0E14;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-muted);
}

.dib-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dib-item strong {
  color: var(--ink-secondary);
}

.dib-sep {
  color: var(--ink-subtle);
}

.dib-shortcut strong {
  color: var(--electric-lime);
}

/* ==========================================================================
   7. About Modal
   ========================================================================== */
.about-card-panel {
  width: 90vw;
  max-width: 620px;
  background-color: #0E1118;
  border: 1px solid var(--border-medium);
  border-radius: 4px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.85);
  overflow: hidden;
  transform: scale(0.96);
  transition: transform var(--transition-smooth);
}

.interactive-drawer-backdrop.is-open .about-card-panel {
  transform: scale(1);
}

.about-card-header {
  height: 46px;
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background-color: #121620;
}

.ach-brand {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--electric-lime);
}

.about-card-body {
  padding: 22px;
}

.about-student-hero {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.ash-avatar {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 2px solid var(--electric-lime);
  overflow: hidden;
  flex-shrink: 0;
}

.ash-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ash-name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  color: #FFFFFF;
}

.ash-meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-muted);
  margin-top: 2px;
}

.ash-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--green-status);
  background-color: rgba(16, 185, 129, 0.1);
  padding: 2px 7px;
  border-radius: 2px;
}

.about-grid-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 18px;
}

.ags-cell {
  background-color: #090B10;
  border: 1px solid var(--border-hairline);
  padding: 9px 12px;
  border-radius: 2px;
}

.ags-lbl {
  display: block;
  font-family: var(--font-mono);
  font-size: 8.5px;
  color: var(--ink-muted);
  letter-spacing: 0.1em;
  margin-bottom: 2px;
}

.ags-val {
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 600;
  color: #FFFFFF;
}

.about-experiments-list {
  background-color: #090B10;
  border: 1px solid var(--border-hairline);
  padding: 12px 16px;
  border-radius: 2px;
}

.ael-title {
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ink-secondary);
  margin-bottom: 8px;
}

.ael-items {
  padding-left: 18px;
  font-size: 11.5px;
  line-height: 1.65;
  color: #CBD5E1;
}

.ael-items li strong {
  font-family: var(--font-mono);
  color: var(--electric-lime);
  margin-right: 4px;
}

/* ==========================================================================
   8. Responsive Layout across Laptop, Desktop, and Mobile
   ========================================================================== */
@media (max-width: 1200px) {
  .hero-section {
    grid-template-columns: 1fr 1fr;
  }
  .hero-context-col {
    grid-column: span 2;
    border-top: 1px solid var(--border-hairline);
  }
  .gallery-top-tier {
    grid-template-columns: 1fr;
  }
  .medium-cards-column {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }
  .gallery-bottom-tier {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .top-nav {
    padding: 0 16px;
  }
  .hero-section {
    grid-template-columns: 1fr;
  }
  .hero-graphic-col {
    display: none;
  }
  .hero-context-col {
    grid-column: span 1;
  }
  .section-divider-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
  }
  .gallery-top-tier,
  .medium-cards-column,
  .gallery-bottom-tier {
    grid-template-columns: 1fr;
  }
  .medium-card-content,
  .compact-card-content {
    flex-direction: column-reverse;
    align-items: flex-start;
  }
  .medium-frame,
  .compact-frame {
    width: 100%;
    height: 140px;
  }
  .app-footer {
    flex-direction: column;
    height: auto;
    padding: 16px;
    gap: 8px;
  }
}