/* ==========================================================================
   KSHITIZ GUPTA — PORTFOLIO DESIGN SYSTEM
   Inspired by Unseen Studio, Balavignesh, Dropbox Brand, Rive & Apple.
   Pure client-side CSS3. Zero framework dependencies.
   ========================================================================== */

:root, [data-theme="dark"] {
  --bg-canvas: #090B10;
  --bg-subtle: #0E121A;
  --bg-surface: #131722;
  --bg-surface-elevated: #1A2030;
  --bg-surface-hover: #1E2538;
  
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(224, 109, 59, 0.35);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #7C8CA3; /* was #64748B (3.76-4.14:1, failed AA); now 5.23-5.75:1 */
  --text-inverse: #090B10;

  --accent: #E06D3B;
  --accent-hover: #F27B48;
  --accent-text: #E06D3B; /* passes 6.02:1 on dark backgrounds */
  --accent-subtle: rgba(224, 109, 59, 0.12);
  --accent-glow: rgba(224, 109, 59, 0.25);
  --accent-secondary: #38BDF8;

  --badge-bg: rgba(255, 255, 255, 0.05);
  --badge-border: rgba(255, 255, 255, 0.1);
  --badge-text: #E2E8F0;

  --success: #10B981;
  --success-subtle: rgba(16, 185, 129, 0.12);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 24px rgba(224, 109, 59, 0.15);

  --nav-backdrop: rgba(9, 11, 16, 0.85);
  --modal-overlay: rgba(5, 7, 10, 0.82);
}

[data-theme="light"] {
  --bg-canvas: #F8F9FB;
  --bg-subtle: #EEF2F6;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #F4F6F9;
  --bg-surface-hover: #EBF0F6;

  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-medium: rgba(15, 23, 42, 0.14);
  --border-accent: rgba(194, 94, 46, 0.35);

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-inverse: #F8FAFC;

  --accent: #C25E2E;
  --accent-hover: #A84A1E;
  --accent-text: #A84A1E; /* passes 5.73:1 on white; base --accent (4.26:1) stays for backgrounds/borders only */
  --accent-subtle: rgba(194, 94, 46, 0.1);
  --accent-glow: rgba(194, 94, 46, 0.15);
  --accent-secondary: #0284C7;

  --badge-bg: rgba(15, 23, 42, 0.04);
  --badge-border: rgba(15, 23, 42, 0.08);
  --badge-text: #1E293B;

  --success: #059669;
  --success-subtle: rgba(5, 150, 105, 0.1);

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 20px rgba(194, 94, 46, 0.12);

  --nav-backdrop: rgba(248, 249, 251, 0.88);
  --modal-overlay: rgba(15, 23, 42, 0.6);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5 {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--text-primary);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.025em;
}

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

button {
  font-family: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

ul {
  list-style: none;
}

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

.mono {
  font-family: 'IBM Plex Mono', monospace;
}

::selection {
  background: var(--accent);
  color: #FFFFFF;
}

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

/* Layout Framework */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 36px;
  }
}

.section {
  padding: 96px 0;
  position: relative;
}

.section-divider {
  border-top: 1px solid var(--border-subtle);
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--nav-backdrop);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.25s ease;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-glyph {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: var(--accent);
  transform: rotate(45deg);
  display: inline-block;
  flex-shrink: 0;
  box-shadow: 0 0 10px var(--accent-glow);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.brand:hover .brand-glyph {
  transform: rotate(135deg) scale(1.1);
}

.status-badge {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-family: 'IBM Plex Mono', monospace;
  background: var(--badge-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

@media (min-width: 900px) {
  .status-badge {
    display: inline-flex;
  }
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 6px var(--success);
  display: inline-block;
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

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

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8125rem;
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--badge-bg);
}

.nav-link.active {
  color: var(--accent-text);
  background: var(--accent-subtle);
}

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

/* Theme Toggle Button */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
  background: var(--bg-surface-elevated);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

@media (min-width: 768px) {
  .mobile-nav-toggle {
    display: none;
  }
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--border-medium);
  padding: 20px 24px;
  display: none;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.125rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 10px 18px;
  border-radius: 999px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
  box-shadow: 0 2px 10px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

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

.btn-outline {
  border-color: var(--border-medium);
  color: var(--text-secondary);
}

.btn-outline:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 14px 26px;
  font-size: 0.875rem;
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-tagline-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.eyebrow-chip {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--accent-subtle);
  color: var(--accent-text);
  font-weight: 600;
  border: 1px solid var(--border-accent);
}

.eyebrow-location {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 4.25rem);
  letter-spacing: -0.035em;
  line-height: 1.08;
  max-width: 950px;
  margin-bottom: 24px;
}

.hero-title .highlight {
  color: var(--accent-text);
  position: relative;
  display: inline-block;
}

.hero-desc {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 760px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

/* Ledger / Quantified Metrics Bar (High-Density Studio Style) */
.metrics-ledger {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.ledger-grid {
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .ledger-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .ledger-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.ledger-item {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.2s ease;
  position: relative;
}

@media (min-width: 640px) {
  .ledger-item:nth-child(odd) {
    border-right: 1px solid var(--border-subtle);
  }
}

@media (min-width: 1024px) {
  .ledger-item {
    border-bottom: none;
    border-right: 1px solid var(--border-subtle);
  }
  .ledger-item:last-child {
    border-right: none;
  }
}

.ledger-item:hover {
  background: var(--bg-surface-elevated);
}

.ledger-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.ledger-item:hover::before {
  width: 100%;
}

.ledger-metric {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.ledger-caption {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* "What I Actually Do" Editorial Split */
.editorial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.editorial-header {
  position: relative;
}

@media (min-width: 860px) {
  .editorial-grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }
  .editorial-header {
    position: sticky;
    top: 96px;
  }
}

.editorial-pillar {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 24px;
  margin-bottom: 20px;
  transition: all 0.2s ease;
}

.editorial-pillar:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.pillar-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent-text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: block;
}

.pillar-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.pillar-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Projects Showcase */
.showcase-header {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .showcase-header {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

.section-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-text);
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: clamp(1.875rem, 3vw, 2.5rem);
  letter-spacing: -0.03em;
  max-width: 600px;
}

/* Interactive Filter & Search Controls */
.filter-bar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 16px;
}

@media (min-width: 860px) {
  .filter-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.filter-pills {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.filter-pill {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  padding: 6px 14px;
  border-radius: 999px;
  color: var(--text-secondary);
  background: var(--badge-bg);
  border: 1px solid var(--border-subtle);
  transition: all 0.2s ease;
  cursor: pointer;
}

.filter-pill:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.filter-pill.active {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  box-shadow: 0 2px 8px var(--accent-glow);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 6px 14px;
  min-width: 240px;
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.8125rem;
  width: 100%;
}

.search-box input:focus {
  outline: none;
}

.search-box svg {
  color: var(--text-muted);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Empty Search Results State */
.empty-search-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 20px;
  background: var(--bg-surface);
  border: 1px dashed var(--border-medium);
  border-radius: 12px;
}

.empty-search-state h4 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.empty-search-state p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 16px;
  line-height: 1.6;
}

.clear-search-btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8125rem;
  padding: 6px 16px;
  border-radius: 6px;
  background: var(--accent-subtle);
  color: var(--accent-text);
  border: 1px solid var(--border-accent);
  cursor: pointer;
  transition: all 0.2s ease;
}

.clear-search-btn:hover {
  background: var(--accent);
  color: #FFFFFF;
}

/* Projects Bento Grid */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Project Bento Card (Rive & Unseen Inspired) */
.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  background: var(--bg-surface-elevated);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  z-index: 3;
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(350px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--accent-subtle), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  border-radius: inherit;
  z-index: 1;
}

.project-card:hover::after {
  opacity: 1;
}

.card-top, .card-title, .card-one-liner, .card-metric-strip, .card-details-box, .card-footer {
  position: relative;
  z-index: 2;
}

.card-metric-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.card-metric-chip {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.project-card:hover .card-metric-chip {
  border-color: var(--border-accent);
  background: var(--bg-surface);
}

.card-metric-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-text);
  line-height: 1.15;
}

.card-metric-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6875rem;
  color: var(--text-muted);
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.card-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-subtle);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-text);
  flex-shrink: 0;
}

.card-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--badge-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.card-title {
  font-size: 1.25rem;
  line-height: 1.3;
  margin-bottom: 8px;
}

.card-one-liner {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
  font-style: italic;
}

.card-details-box {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-detail-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.8125rem;
}

.detail-key {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6875rem;
  color: var(--accent-text);
  text-transform: uppercase;
  min-width: 68px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.detail-val {
  color: var(--text-secondary);
  line-height: 1.4;
}

.card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.read-case-study {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-text);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}

.project-card:hover .read-case-study {
  gap: 10px;
}

.impact-pill {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6875rem;
  background: var(--success-subtle);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
}

/* Frameworks & Quantitative Systems Architecture Strip */
.framework-strip-section {
  padding-bottom: 24px;
}

.framework-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 32px;
}

@media (min-width: 640px) {
  .framework-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .framework-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.framework-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.framework-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.framework-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.framework-card:hover::after {
  transform: scaleX(1);
}

.framework-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.framework-title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-top: 4px;
  line-height: 1.3;
}

.framework-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.framework-formula-box {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

/* Card Visual Previews (Embedded Miniature Charts) */
.card-preview-chart {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
  transition: border-color 0.2s ease;
}

.project-card:hover .card-preview-chart {
  border-color: var(--border-accent);
}

.card-chart-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-chart-title .badge-pill {
  color: var(--accent-text);
  font-weight: 600;
}

.card-preview-chart svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

/* View Mode Switch (Cards vs. Exhibits) */
.view-switch-container {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 4px;
}

.view-switch-btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-switch-btn.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-subtle);
}

.view-switch-btn:hover:not(.active) {
  color: var(--text-primary);
}

/* Interactive Exhibit Showcase Panel */
.exhibits-showcase-panel {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 24px;
  margin-top: 16px;
  box-shadow: var(--shadow-md);
  position: relative;
}

.exhibits-showcase-panel.active {
  display: block;
}

@media (min-width: 768px) {
  .exhibits-showcase-panel {
    padding: 36px;
  }
}

.exhibit-tabs-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 28px;
  -webkit-overflow-scrolling: touch;
}

.exhibit-tab-btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 8px 16px;
  border-radius: 8px;
  background: var(--bg-canvas);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.exhibit-tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.exhibit-tab-btn.active {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
  box-shadow: 0 2px 8px var(--accent-glow);
}

.exhibit-content-pane {
  display: none;
}

.exhibit-content-pane.active {
  display: block;
  animation: fadeIn 0.25s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.exhibit-banner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-bottom: 24px;
}

@media (min-width: 960px) {
  .exhibit-banner-grid {
    grid-template-columns: 1.2fr 1fr;
  }
}

.exhibit-interactive-box {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
}

/* Live KPI Simulator Inputs */
.kpi-sim-slider-row {
  margin-bottom: 14px;
}

.kpi-sim-slider-row label {
  display: flex;
  justify-content: space-between;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.kpi-sim-slider-row input[type=range] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

.kpi-score-meter {
  background: var(--bg-surface);
  border: 1px solid var(--border-accent);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  margin-top: 16px;
}

.kpi-score-val {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--accent-text);
  line-height: 1;
}

.kpi-score-badge {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
  margin-top: 8px;
}

.score-poor { background: rgba(239, 68, 68, 0.15); color: #EF4444; border: 1px solid rgba(239, 68, 68, 0.3); }
.score-good { background: rgba(245, 158, 11, 0.15); color: #F59E0B; border: 1px solid rgba(245, 158, 11, 0.3); }
.score-excellent { background: rgba(16, 185, 129, 0.15); color: #10B981; border: 1px solid rgba(16, 185, 129, 0.3); }

/* 1-Page Recruiter Quick-Scan Panel */
.recruiter-scan-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 16px;
}

.recruiter-summary-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.recruiter-summary-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.recruiter-metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (min-width: 768px) {
  .recruiter-metrics-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.recruiter-metric-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 12px 16px;
}

.recruiter-metric-val {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-text);
  line-height: 1.2;
}

.recruiter-metric-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.recruiter-track-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.recruiter-track-title {
  font-size: 0.8125rem;
  font-family: 'IBM Plex Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-text);
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border-medium);
}

.recruiter-item-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all 0.2s ease;
}

.recruiter-item-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-surface-elevated);
  box-shadow: var(--shadow-sm);
}

.recruiter-item-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.recruiter-item-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.recruiter-item-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.recruiter-item-details {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  font-size: 0.875rem;
  line-height: 1.5;
}

@media (min-width: 640px) {
  .recruiter-item-details {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

.recruiter-detail-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.recruiter-detail-lbl {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.recruiter-detail-val {
  color: var(--text-secondary);
  font-size: 0.8125rem;
}

.recruiter-item-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

.recruiter-item-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.recruiter-view-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-text);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.recruiter-view-btn:hover {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}

.modal-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.modal-share-btn:hover {
  color: var(--accent-text);
  border-color: var(--accent);
  background: var(--bg-surface-elevated);
}

/* Experience / Career Journey Section */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 20px;
  width: 1px;
  background: var(--border-subtle);
}

@media (min-width: 768px) {
  .timeline::before {
    left: 24px;
  }
}

.timeline-item {
  position: relative;
  padding-left: 54px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .timeline-item {
    padding-left: 64px;
  }
}

.timeline-dot {
  position: absolute;
  left: 14px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--bg-canvas);
  border: 2px solid var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

@media (min-width: 768px) {
  .timeline-dot {
    left: 18px;
  }
}

.timeline-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 24px;
  transition: all 0.2s ease;
}

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

.timeline-top {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 12px;
}

@media (min-width: 600px) {
  .timeline-top {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
  }
}

.role-title {
  font-size: 1.125rem;
  color: var(--text-primary);
}

.role-company {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.role-dates {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent-text);
  font-weight: 500;
}

.timeline-points {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-points li {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 18px;
  line-height: 1.55;
}

.timeline-points li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent-text);
}

/* Skills Grid */
.skills-matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .skills-matrix {
    grid-template-columns: repeat(3, 1fr);
  }
}

.skill-category {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 24px;
}

.skill-category-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent-text);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
  display: block;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  padding: 5px 10px;
  border-radius: 6px;
  background: var(--badge-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.skill-tag:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
  background: var(--bg-surface-elevated);
}

/* Modal / Drawer for Case Studies */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--modal-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.modal-overlay.open {
  display: flex;
  opacity: 1;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 20px;
  max-width: 860px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.open .modal-dialog {
  transform: translateY(0);
}

.modal-header {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg-subtle);
}

.modal-header-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.modal-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.modal-close-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.modal-body {
  padding: 28px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.modal-body h4 {
  font-size: 1.125rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.modal-body p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.modal-exhibit-card {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
}

.modal-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

@media (min-width: 640px) {
  .modal-stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.modal-stat-box {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 14px;
}

.modal-stat-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-text);
  margin-bottom: 4px;
}

.modal-stat-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6875rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.modal-footer {
  padding: 18px 28px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-subtle);
  flex-wrap: wrap;
  gap: 12px;
}

/* Contact Section */
.contact-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 40px 24px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .contact-box {
    padding: 64px 48px;
  }
}

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

.contact-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  margin-bottom: 16px;
}

.contact-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 36px;
}

.contact-methods {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.copy-email-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
}

.copy-email-btn:hover {
  border-color: var(--accent);
  color: var(--accent-text);
  background: var(--accent-subtle);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
  padding: 12px 20px;
  border-radius: 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8125rem;
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  display: flex;
  align-items: center;
  gap: 8px;
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Footer */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-canvas);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
  }
}

/* Motion & Reveal Utilities */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  body {
    background: #FFFFFF !important;
    color: #000000 !important;
    font-size: 11pt;
    line-height: 1.4;
  }
  .header, .hero-actions, .filter-bar, .modal-overlay, .toast, .footer, .mobile-menu, #projects, #contact {
    display: none !important;
  }
  .section {
    padding: 20px 0 !important;
  }
  .section-divider {
    border-top: none !important;
  }
  .timeline::before, .timeline-dot {
    display: none !important;
  }
  .timeline-item {
    padding-left: 0 !important;
    margin-bottom: 18px !important;
  }
  .timeline-card {
    border: none !important;
    padding: 0 !important;
    background: none !important;
    box-shadow: none !important;
  }
  .role-title {
    font-size: 13pt !important;
    font-weight: 700 !important;
  }
  .role-dates {
    color: #444444 !important;
    font-size: 10pt !important;
  }
  .timeline-points li {
    font-size: 10pt !important;
    color: #222222 !important;
  }
  .skill-category {
    border: none !important;
    padding: 8px 0 !important;
    background: none !important;
  }
  .skill-tag {
    background: #EEEEEE !important;
    color: #000000 !important;
    border: 1px solid #CCCCCC !important;
  }
}