/* ==========================================================================
   Design System & Tokens - martinnavarrete.dev
   Engineered for maximum visual impact, contrast, and sub-millisecond rendering.
   ========================================================================== */

:root {
  /* Color Palette - Dark Mode Default */
  --bg-primary: #080b11;
  --bg-secondary: #0e131f;
  --bg-tertiary: #161e31;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(26, 37, 60, 0.85);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 242, 254, 0.35);
  --border-accent: rgba(56, 239, 125, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverted: #080b11;

  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-green: #38ef7d;
  --accent-purple: #9d4edd;
  --accent-amber: #f59e0b;

  --gradient-brand: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  --gradient-award: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 35px rgba(0, 242, 254, 0.15);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  color-scheme: dark;
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 102, 204, 0.35);
  --border-accent: rgba(16, 185, 129, 0.4);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverted: #ffffff;

  --gradient-brand: linear-gradient(135deg, #0066cc 0%, #0284c7 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.09);
  --shadow-glow: 0 0 35px rgba(2, 132, 199, 0.12);

  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-blue);
}

/* Ambient Background Lights */
.ambient-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(140px);
  opacity: 0.15;
  z-index: 0;
}
.glow-top {
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, var(--accent-cyan), var(--accent-blue));
}
.glow-middle {
  top: 1400px;
  right: -100px;
  background: radial-gradient(circle, var(--accent-purple), var(--accent-blue));
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  position: relative;
  z-index: 1;
}

/* Site Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(8, 11, 17, 0.75);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-normal), border var(--transition-normal);
}
[data-theme="light"] .site-header {
  background: rgba(248, 250, 252, 0.85);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
}
.logo-badge {
  background: var(--gradient-brand);
  color: #080b11;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}
.logo-text .tld {
  color: var(--accent-cyan);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}
.nav-link:hover {
  color: var(--text-primary);
}

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

/* Theme Toggle */
.theme-toggle {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}
.theme-toggle .sun-icon {
  display: none;
}
.theme-toggle .moon-icon {
  display: block;
}
[data-theme="light"] .theme-toggle .sun-icon {
  display: block;
}
[data-theme="light"] .theme-toggle .moon-icon {
  display: none;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger-bar {
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
}
.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
}
.btn-lg {
  padding: 0.8rem 1.6rem;
  font-size: 1rem;
}
.btn-primary {
  background: var(--gradient-brand);
  color: #080b11;
  box-shadow: 0 4px 14px rgba(0, 242, 254, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 242, 254, 0.4);
}
.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}
.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 4rem;
  position: relative;
}
.hero-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: rgba(56, 239, 125, 0.1);
  border: 1px solid rgba(56, 239, 125, 0.3);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--accent-green);
  margin-bottom: 1.75rem;
}
.status-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-size: 3.4rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 820px;
  line-height: 1.7;
  margin-bottom: 2.25rem;
}
.hero-subtitle strong {
  color: var(--text-primary);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  width: 100%;
}
.metric-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
  transition: transform var(--transition-normal), border var(--transition-normal);
}
.metric-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
}
.metric-card.highlighted {
  border-color: rgba(245, 158, 11, 0.4);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.08) 0%, rgba(17, 24, 39, 0.7) 100%);
}
.metric-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}
.metric-value {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
}
.metric-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}
.metric-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Section Shared Headers */
.section {
  padding: 5rem 0;
  position: relative;
}
.section-header {
  margin-bottom: 3rem;
  max-width: 720px;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  margin-bottom: 0.65rem;
}
.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
}
.section-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* Pillars Section */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.pillar-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  transition: all var(--transition-normal);
}
.pillar-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.pillar-card.highlighted-pillar {
  border-color: rgba(0, 242, 254, 0.4);
  background: linear-gradient(180deg, rgba(0, 242, 254, 0.05) 0%, rgba(17, 24, 39, 0.7) 100%);
}
.pillar-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.12);
  border: 1px solid rgba(0, 242, 254, 0.3);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}
.pillar-icon {
  color: var(--accent-cyan);
  margin-bottom: 1.25rem;
}
.pillar-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.pillar-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}
.pillar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.pillar-tags span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

/* Experience Filters & Timeline */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.5rem 1.15rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}
.filter-btn.active {
  background: var(--gradient-brand);
  color: #080b11;
  border-color: transparent;
  box-shadow: 0 2px 10px rgba(0, 242, 254, 0.2);
}

.timeline {
  position: relative;
  border-left: 2px solid var(--border-subtle);
  margin-left: 1rem;
  padding-left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.timeline-item {
  position: relative;
  transition: opacity var(--transition-normal);
}
.timeline-item.hidden {
  display: none;
}
.timeline-marker {
  position: absolute;
  top: 1.5rem;
  left: -2.55rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 10px var(--accent-cyan);
}
.timeline-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border var(--transition-normal), transform var(--transition-normal);
}
.timeline-card:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
}
.role-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}
.company-name {
  color: var(--accent-blue);
  font-weight: 600;
  font-size: 1rem;
}
.role-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
}
.role-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.award-tag {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fbbf24;
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}
.impact-tag {
  background: rgba(56, 239, 125, 0.15);
  border: 1px solid rgba(56, 239, 125, 0.3);
  color: var(--accent-green);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}
.role-summary {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}
.bullet-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.bullet-list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.bullet-list li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
  font-size: 1.1rem;
  line-height: 1.3;
}
.bullet-list li strong {
  color: var(--text-primary);
}

.tech-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tech-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}
.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}
.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.project-type {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-weight: 600;
}
.project-link-icon {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.project-link-icon:hover {
  color: var(--text-primary);
}
.project-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.project-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}
.project-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.project-features li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}
.project-features li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
}
.project-card-footer {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: gap var(--transition-fast);
}
.link-btn:hover {
  gap: 0.65rem;
}
.badge-completed {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-green);
  background: rgba(56, 239, 125, 0.1);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
}

/* Skills Matrix */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.skill-group {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: border var(--transition-normal);
}
.skill-group:hover {
  border-color: var(--border-hover);
}
.skill-group.highlighted-skill-group {
  border-color: rgba(0, 242, 254, 0.35);
  background: linear-gradient(180deg, rgba(0, 242, 254, 0.05) 0%, rgba(17, 24, 39, 0.7) 100%);
}
.skill-group-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.65rem;
}
.skill-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.skill-items li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}
.skill-name {
  color: var(--text-secondary);
}
.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

/* Education Grid */
.education-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.education-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  gap: 1.25rem;
  transition: all var(--transition-normal);
}
.education-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}
.education-card.award-card {
  border-color: rgba(245, 158, 11, 0.35);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.06) 0%, rgba(17, 24, 39, 0.7) 100%);
}
.edu-icon {
  font-size: 2rem;
  line-height: 1;
}
.edu-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.edu-degree {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0.35rem 0;
  color: var(--text-primary);
}
.edu-school {
  color: var(--accent-blue);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}
.edu-description {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.5;
}

/* Contact & Work Auth Section */
.contact-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  text-align: center;
}
.contact-header {
  max-width: 680px;
  margin: 0 auto 2.5rem;
}
.contact-sub {
  color: var(--text-secondary);
  font-size: 1.05rem;
}
.authorization-banner {
  background: rgba(56, 239, 125, 0.08);
  border: 1px solid rgba(56, 239, 125, 0.3);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  max-width: 820px;
  margin: 0 auto 2.5rem;
  text-align: left;
}
.banner-icon {
  color: var(--accent-green);
  flex-shrink: 0;
}
.banner-content {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.5;
}
.contact-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  max-width: 960px;
  margin: 0 auto 2rem;
}
.contact-link-item {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}
.contact-link-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.contact-item-icon {
  color: var(--accent-cyan);
}
.contact-item-info {
  display: flex;
  flex-direction: column;
  text-align: left;
  overflow: hidden;
}
.contact-item-info .label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}
.contact-item-info .value {
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.location-banner {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Site Footer */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  padding: 2rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.footer-brand {
  font-weight: 700;
  color: var(--text-primary);
}
.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.back-to-top:hover {
  color: var(--accent-cyan);
}

/* Modal Dialog */
.modal-dialog {
  margin: auto;
  border: none;
  background: transparent;
  padding: 1rem;
  max-width: 680px;
  width: 92%;
}
.modal-dialog::backdrop {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
  color: var(--text-primary);
}
.modal-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.75rem;
  position: relative;
}
.dialog-icon {
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.1);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}
.modal-title {
  font-size: 1.35rem;
  font-weight: 700;
}
.modal-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.modal-close {
  position: absolute;
  right: 0;
  top: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  transition: color var(--transition-fast);
}
.modal-close:hover {
  color: var(--text-primary);
}
.resume-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}
.resume-option-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}
.resume-option-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.option-icon {
  font-size: 1.5rem;
}
.option-text {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.option-title {
  font-weight: 700;
  font-size: 0.95rem;
}
.option-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
}
.modal-footer {
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 1rem;
}
.modal-footer a {
  color: var(--accent-cyan);
  text-decoration: none;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.75rem;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .education-grid {
    grid-template-columns: 1fr;
  }
  .contact-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .pillars-grid, .projects-grid {
    grid-template-columns: 1fr;
  }
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
  }
  .nav-menu.open {
    display: flex;
  }
  .mobile-toggle {
    display: flex;
  }
  .contact-links-grid {
    grid-template-columns: 1fr;
  }
  .contact-card {
    padding: 2.5rem 1.5rem;
  }
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
}