/* ==========================================================================
   HARI M B - PORTFOLIO DESIGN SYSTEM & STYLESHEET
   Aesthetic: Technical Engineering Blueprint meets Modern High-Performance Product
   Color Palette: Deep Slate (#0d1117), Card Surface (#161b22), Border (#30363d),
                  Racing Crimson Red Accent (#e63946), High-contrast Crisp Text (#f0f6fc)
   ========================================================================== */

:root {
  /* Color Tokens */
  --bg-primary: #0a0d12;
  --bg-secondary: #0d1117;
  --bg-surface: #161b22;
  --bg-surface-elevated: #1f242c;
  --bg-surface-hover: #262c36;
  --border-subtle: #21262d;
  --border-default: #30363d;
  --border-focus: #e63946;
  --border-accent: rgba(230, 57, 70, 0.45);

  --accent-primary: #e63946;
  --accent-hover: #c9182b;
  --accent-glow: rgba(230, 57, 70, 0.22);
  --accent-light: #ff6b7a;

  --cyan-accent: #38bdf8;
  --cyan-glow: rgba(56, 189, 248, 0.15);
  --emerald-accent: #34d399;
  --emerald-glow: rgba(52, 211, 153, 0.15);

  --text-primary: #f0f6fc;
  --text-secondary: #c9d1d9;
  --text-muted: #8b949e;
  --text-dim: #6e7681;

  /* Typography */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, Menlo, Courier, monospace;

  /* Spacing */
  --container-max-width: 1200px;
  --section-spacing: clamp(4rem, 8vw, 7rem);
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 16px;
  --transition-fast: 0.18s ease;
  --transition-base: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-surface-hover: #f1f5f9;
  --border-subtle: #e2e8f0;
  --border-default: #cbd5e1;
  --border-focus: #dc2626;
  --border-accent: rgba(220, 38, 38, 0.35);

  --accent-primary: #dc2626;
  --accent-hover: #b91c1c;
  --accent-glow: rgba(220, 38, 38, 0.15);
  --accent-light: #ef4444;

  --cyan-accent: #0284c7;
  --cyan-glow: rgba(2, 132, 199, 0.12);
  --emerald-accent: #059669;
  --emerald-glow: rgba(5, 150, 105, 0.12);

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
}

/* Theme Toggle Button Styles */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--border-radius-sm);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background-color: var(--bg-surface-hover);
}

.theme-toggle-btn .sun-icon {
  display: none;
}

.theme-toggle-btn .moon-icon {
  display: block;
}

[data-theme="light"] .theme-toggle-btn .sun-icon {
  display: block;
}

[data-theme="light"] .theme-toggle-btn .moon-icon {
  display: none;
}

[data-theme="light"] body {
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(220, 38, 38, 0.05), transparent 45%),
    linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

[data-theme="light"] .site-header {
  background-color: rgba(248, 250, 252, 0.88);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(230, 57, 70, 0.08), transparent 45%),
    linear-gradient(to right, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  background-position: top center, 0 0, 0 0;
}

/* Accessible Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

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

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-light);
}

.mono-metric {
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(10, 13, 18, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast);
}

.site-header.scrolled {
  border-bottom-color: var(--border-default);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--border-radius-sm);
  background: linear-gradient(135deg, rgba(230, 57, 70, 0.2), rgba(230, 57, 70, 0.05));
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.35rem 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 10px rgba(230, 57, 70, 0.25);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(230, 57, 70, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-default);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding-top: clamp(3rem, 6vw, 5.5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.badge-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
  background-color: rgba(230, 57, 70, 0.1);
  color: var(--accent-light);
  border: 1px solid var(--border-accent);
}

.status-pill.success {
  background-color: var(--emerald-glow);
  color: var(--emerald-accent);
  border-color: rgba(52, 211, 153, 0.35);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.hero-title {
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  letter-spacing: -0.03em;
  font-weight: 800;
}

.hero-title .highlight {
  color: var(--accent-primary);
  background: linear-gradient(135deg, #e63946 0%, #ff6b7a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.45;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

/* Hero Portrait Card */
.hero-visual {
  position: relative;
}

.portrait-card {
  position: relative;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.portrait-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
}

.portrait-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  background-color: var(--bg-surface-elevated);
  overflow: hidden;
}

.portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.portrait-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25rem;
  background: linear-gradient(to top, rgba(10, 13, 18, 0.95) 0%, rgba(10, 13, 18, 0.6) 65%, transparent 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.portrait-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
}

.portrait-role {
  font-size: 0.8rem;
  color: var(--accent-light);
  font-family: var(--font-mono);
}

/* Key Stat Callouts Banner */
.stats-banner {
  margin-top: 3.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.stat-item {
  display: flex;
  flex-direction: column;
  padding: 0 0.5rem;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -0.75rem;
  top: 15%;
  height: 70%;
  width: 1px;
  background-color: var(--border-subtle);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
  font-weight: 700;
  color: var(--accent-primary);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.stat-source {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  margin-top: 0.15rem;
}

/* ==========================================================================
   ABOUT & CURRENTLY
   ========================================================================== */
.section {
  padding-top: var(--section-spacing);
  padding-bottom: var(--section-spacing);
  border-top: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 2.75rem;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  max-width: 680px;
}

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

.about-text {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.about-text p + p {
  margin-top: 1.25rem;
}

.currently-strip {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-elevated) 100%);
  border: 1px solid var(--border-default);
  border-left: 4px solid var(--accent-primary);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}

.currently-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-light);
  margin-bottom: 0.85rem;
}

.currently-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.9rem;
}

.currently-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.currently-icon {
  color: var(--accent-primary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* ==========================================================================
   FEATURED CASE STUDY: TRAX MOTO
   ========================================================================== */
.case-study-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  margin-bottom: 3rem;
}

.case-study-hero {
  padding: 2.25rem;
  background: linear-gradient(to right, rgba(230, 57, 70, 0.05), transparent 70%);
  border-bottom: 1px solid var(--border-subtle);
}

.case-study-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
}

.tag-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--border-radius-sm);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
}

.tag-badge.accent {
  background-color: rgba(230, 57, 70, 0.12);
  border-color: var(--accent-primary);
  color: var(--accent-light);
  font-weight: 600;
}

.case-study-title {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  margin-bottom: 0.75rem;
}

.case-study-lead {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 900px;
}

.case-study-body {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.metric-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  padding: 1.15rem;
  transition: border-color var(--transition-fast);
}

.metric-box:hover {
  border-color: var(--border-accent);
}

.metric-box-val {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.metric-box-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.case-study-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.technical-breakdown h4 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.technical-breakdown p {
  font-size: 0.925rem;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.spec-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--border-subtle);
}

.spec-item span:first-child {
  color: var(--text-muted);
}

.spec-item span:last-child {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-primary);
}

/* Gallery & Figures */
.figure-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.figure-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
}

.figure-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
}

.figure-card img {
  width: 100%;
  height: 190px;
  object-fit: contain;
  background-color: #0d1117;
  padding: 0.5rem;
  display: block;
}

.figure-caption {
  padding: 0.75rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.figure-caption strong {
  color: var(--text-primary);
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin-bottom: 0.2rem;
}

/* ==========================================================================
   FEATURED CASE STUDY: NIT CALICUT
   ========================================================================== */
.nitc-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

/* ==========================================================================
   PROJECTS GRID (CARDS UNDER 60 WORDS)
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.project-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-primary);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
}

.project-thumb {
  position: relative;
  width: 100%;
  height: 200px;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.project-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.5rem;
  transition: transform var(--transition-fast);
}

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

.project-thumb-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--border-radius-sm);
  background-color: rgba(10, 13, 18, 0.85);
  border: 1px solid var(--border-default);
  color: var(--accent-light);
  backdrop-filter: blur(6px);
}

.project-content {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-card-header {
  margin-bottom: 0.75rem;
}

.project-card-title {
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
}

.project-team-tag {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.structured-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-secondary);
  flex-grow: 1;
}

.card-field strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  margin-right: 0.35rem;
}

.tools-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-subtle);
}

.tool-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--border-radius-sm);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

/* ==========================================================================
   EXPERIENCE TIMELINE
   ========================================================================== */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--border-subtle);
}

.timeline-item {
  position: relative;
  padding-left: 55px;
  margin-bottom: 2.75rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 12px;
  top: 5px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--bg-surface);
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 10px rgba(230, 57, 70, 0.4);
}

.timeline-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  transition: border-color var(--transition-fast);
}

.timeline-card:hover {
  border-color: var(--border-accent);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-light);
}

.timeline-org {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.timeline-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.timeline-card li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.timeline-card li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

/* ==========================================================================
   SKILLS & EDUCATION
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.skills-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
}

.skills-category {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  font-size: 0.825rem;
  padding: 0.35rem 0.65rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.cert-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-sm);
  padding: 1.15rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.cert-icon {
  color: var(--accent-primary);
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.cert-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.cert-issuer {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: 0.2rem;
}

/* ==========================================================================
   CONTACT SECTION & FOOTER
   ========================================================================== */
.contact-card {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-secondary) 100%);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-lg);
  padding: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
}

.contact-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 0.75rem;
}

.contact-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2rem auto;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.85rem 1.75rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.contact-btn:hover {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
}

.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-primary);
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Lightbox Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background-color: rgba(5, 7, 10, 0.88);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--border-radius-md);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
}

.modal-header {
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0 0.5rem;
  line-height: 1;
}

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

.modal-img-wrap {
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-primary);
  overflow: auto;
}

.modal-img-wrap img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
}

.modal-caption {
  padding: 0.85rem 1.25rem;
  font-size: 0.825rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

/* ==========================================================================
   RESPONSIVE DESIGN & ACCESSIBILITY
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-visual {
    max-width: 400px;
    margin: 0 auto;
  }

  .stats-banner {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .stat-item:nth-child(2)::after {
    display: none;
  }

  .about-grid,
  .case-study-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-default);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1.25rem;
  }

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

  .mobile-toggle {
    display: block;
  }

  .stats-banner {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .stat-item::after {
    display: none !important;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Card Sub-Gallery Strip */
.card-gallery-strip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-subtle);
}

.gallery-strip-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-right: 0.25rem;
  white-space: nowrap;
}

.gallery-mini-item {
  position: relative;
  width: 72px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
  background-color: var(--bg-primary);
}

.gallery-mini-item:hover {
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25);
}

.gallery-mini-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-mini-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10, 13, 18, 0.85);
  font-size: 0.62rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  text-align: center;
  padding: 1px 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}