/* ==========================================================================
   JAMONE KELLY - MODERN PORTFOLIO DESIGN SYSTEM (2026)
   Clean, performant, responsive, zero-dependency Vanilla CSS
   ========================================================================== */

:root {
  /* Color Palette - Apple / Linear Obsidian Theme */
  --bg-base: #080b11;
  --bg-surface: #0d121d;
  --bg-surface-elevated: #131b2e;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(26, 38, 64, 0.85);
  --bg-glass: rgba(13, 18, 29, 0.8);
  --bg-glass-heavy: rgba(8, 11, 17, 0.92);

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.14);
  --border-focus: rgba(99, 102, 241, 0.5);
  --border-accent: rgba(99, 102, 241, 0.3);

  /* Typography Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #080b11;

  /* Accent Colors */
  --accent-primary: #6366f1;       /* Electric Indigo */
  --accent-primary-hover: #4f46e5;
  --accent-primary-glow: rgba(99, 102, 241, 0.25);
  --accent-cyan: #06b6d4;          /* Cyber Cyan */
  --accent-cyan-glow: rgba(6, 182, 212, 0.2);
  --accent-purple: #a855f7;        /* Neon Purple */
  --accent-emerald: #10b981;       /* Emerald Green */
  --accent-amber: #f59e0b;         /* Amber */

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --radius-squircle: 22.5%;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.18);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, monospace;

  /* Container */
  --max-width: 1200px;
  --header-height: 72px;

  /* Animation timing */
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms ease;
  --transition-normal: 250ms var(--ease-smooth);
}

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

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

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background: 
    radial-gradient(circle at 15% 10%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(6, 182, 212, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, rgba(168, 85, 247, 0.08) 0%, transparent 50%),
    var(--bg-base);
}

/* Global Selection */
::selection {
  background: var(--accent-primary);
  color: #ffffff;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Section Spacing */
.section {
  padding-top: 96px;
  padding-bottom: 96px;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border-accent);
  color: var(--accent-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.navbar.scrolled {
  background: var(--bg-glass-heavy);
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}

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

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.brand-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2px solid var(--accent-primary);
  object-fit: cover;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  color: var(--text-primary);
  line-height: 1.2;
}

.brand-role {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-item a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

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

.nav-item a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-primary);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-nav {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--accent-primary);
  color: #ffffff;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.btn-nav:hover {
  background: var(--accent-primary-hover);
  box-shadow: 0 0 16px var(--accent-primary-glow);
  transform: translateY(-1px);
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-primary);
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-light);
  padding: 24px;
  flex-direction: column;
  gap: 20px;
  z-index: 999;
}

.mobile-menu-overlay.open {
  display: flex;
  animation: slideDown 250ms var(--ease-smooth);
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-nav-link {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-nav-link:hover {
  color: var(--accent-primary);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
  padding-top: calc(var(--header-height) + 64px);
  padding-bottom: 96px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  align-items: center;
  gap: 64px;
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-emerald);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-accent {
  background: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-bio {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 600px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn-primary {
  background: var(--accent-primary);
  color: #ffffff;
  border: 1px solid var(--accent-primary);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

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

.hero-socials {
  display: flex;
  align-items: center;
  gap: 18px;
}

.social-icon-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-icon-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-focus);
  background: var(--bg-surface-elevated);
  transform: translateY(-2px);
}

/* Hero Visual / Avatar Card */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-card {
  position: relative;
  width: 100%;
  max-width: 380px;
  padding: 24px;
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.hero-avatar-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 20px;
  border: 1px solid var(--border-subtle);
}

.hero-avatar-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
  text-align: center;
}

.stat-item .stat-num {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-item .stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 4px;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */

.projects-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin-bottom: 48px;
}

/* Filter Tabs */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.filter-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
}

.filter-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: 0 0 12px var(--accent-primary-glow);
}

/* Search Box */
.search-bar-wrapper {
  position: relative;
  width: 100%;
  max-width: 440px;
}

.search-input {
  width: 100%;
  padding: 12px 18px 12px 44px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-family: inherit;
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow);
  background: var(--bg-surface-elevated);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

/* Project Card */
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

/* Apple Squircle App Icon */
.app-icon-wrapper {
  width: 68px;
  height: 68px;
  border-radius: var(--radius-squircle);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #1e293b;
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.project-card:hover .app-icon-wrapper {
  transform: scale(1.05);
}

.app-icon-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-badges {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-ios {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.badge-web {
  background: rgba(6, 182, 212, 0.15);
  color: #22d3ee;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.badge-experiment {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.badge-status {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  font-size: 0.6875rem;
}

.badge-status.shipped {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-emerald);
}

.badge-status.beta {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-amber);
}

.card-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* Tech Stack Tags */
.tech-stack-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tech-chip {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

/* Card Actions */
.card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.btn-details {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px 0;
}

.btn-details:hover {
  color: var(--text-primary);
}

.external-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.external-link-icon {
  color: var(--text-muted);
  transition: color var(--transition-fast);
  padding: 4px;
}

.external-link-icon:hover {
  color: var(--text-primary);
}

/* Empty State */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 20px;
  color: var(--text-muted);
}

/* ==========================================================================
   CASE STUDY MODAL
   ========================================================================== */

.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 13, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.modal-card {
  position: relative;
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
  padding: 36px;
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition-normal);
}

.modal-backdrop.open .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.modal-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-squircle);
  object-fit: cover;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.modal-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.modal-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
}

.modal-body {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

.modal-section-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 24px;
  margin-bottom: 12px;
}

.modal-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.modal-link-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.modal-link-btn:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

/* ==========================================================================
   EXPERIENCE SECTION (TIMELINE)
   ========================================================================== */

.timeline-container {
  position: relative;
  max-width: 840px;
  margin: 0 auto;
  padding-left: 48px;
}

/* Vertical Timeline Line */
.timeline-container::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 20px;
  left: 19px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-primary) 0%, rgba(99, 102, 241, 0.1) 100%);
}

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

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

/* Timeline Node */
.timeline-node {
  position: absolute;
  top: 20px;
  left: -48px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 2px solid var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px var(--accent-primary-glow);
  z-index: 2;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
}

.timeline-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.timeline-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.company-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  object-fit: contain;
  background: #ffffff;
  padding: 4px;
  border: 1px solid var(--border-light);
}

.timeline-role-group {
  flex-grow: 1;
}

.timeline-role {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-company {
  font-size: 0.9375rem;
  color: var(--accent-cyan);
  font-weight: 500;
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.timeline-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

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

/* ==========================================================================
   SKILLS & SPECIALTIES SECTION
   ========================================================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.skill-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border-accent);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.skill-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.skill-card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

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

.skill-pill {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding-top: 64px;
  padding-bottom: 40px;
  color: var(--text-secondary);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-bio h4 {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-bio p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 360px;
}

.footer-col h5 {
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 32px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */

/* Tablets (max-width: 1024px) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-bio {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-socials {
    justify-content: center;
  }

  .hero-card {
    margin: 0 auto;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* Mobile Devices (max-width: 640px) */
@media (max-width: 640px) {
  :root {
    --header-height: 64px;
  }

  .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .nav-menu,
  .nav-actions {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .hero {
    padding-top: calc(var(--header-height) + 32px);
    padding-bottom: 48px;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .hero-bio {
    font-size: 1.0625rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .timeline-container {
    padding-left: 28px;
  }

  .timeline-container::before {
    left: 9px;
  }

  .timeline-node {
    left: -28px;
    width: 28px;
    height: 28px;
    top: 24px;
  }

  .timeline-node svg {
    width: 14px;
    height: 14px;
  }

  .timeline-card {
    padding: 18px;
  }

  .timeline-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .modal-card {
    padding: 24px;
  }

  .modal-header {
    flex-direction: column;
    align-items: flex-start;
  }
}