/* ========================================
   Roberto RCX Capodieci - Design System
   Modern, sleek personal website
   ======================================== */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --bg-primary: #0a0f1a;
  --bg-secondary: #111827;
  --bg-tertiary: #1a2234;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(17, 24, 39, 0.8);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.1);

  --accent: #14b8a6;
  --accent-light: #2dd4bf;
  --accent-dark: #0d9488;
  --accent-glow: rgba(20, 184, 166, 0.15);
  --accent2: #6366f1;
  --accent2-light: #818cf8;
  --gradient: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  --gradient-text: linear-gradient(135deg, var(--accent-light) 0%, var(--accent2-light) 100%);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: var(--accent-light);

  --danger: #ef4444;
  --warning: #f59e0b;
  --success: #22c55e;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 800px;
  --nav-height: 72px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px var(--accent-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

::selection {
  background: var(--accent);
  color: var(--bg-primary);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--text-primary);
}

h1 { font-size: var(--text-5xl); letter-spacing: -0.02em; }
h2 { font-size: var(--text-4xl); letter-spacing: -0.02em; }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-accent { color: var(--text-accent); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-lg { font-size: var(--text-lg); }
.text-center { text-align: center; }

.label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-24) 0;
  position: relative;
}

.section-sm {
  padding: var(--space-16) 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 var(--border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-logo:hover { color: var(--text-primary); }

.nav-logo .rcx {
  color: var(--accent);
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link svg {
  flex-shrink: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 200px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--border-radius);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.nav-dropdown-item:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: background var(--transition-fast);
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  max-width: 85vw;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-subtle);
  padding: var(--space-8) var(--space-6);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  z-index: 1001;
  overflow-y: auto;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1000;
}

.mobile-menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
}

.mobile-menu-close:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
}

.mobile-menu-link {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-lg);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--transition-fast);
}

.mobile-menu-link:hover {
  color: var(--text-primary);
}

.mobile-menu-label {
  display: block;
  padding: var(--space-4) 0 var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(20, 184, 166, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 80% 80%, rgba(99, 102, 241, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.hero-grid-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, black, transparent);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

.hero-text {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: 100px;
  background: var(--accent-glow);
  border: 1px solid rgba(20, 184, 166, 0.2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: var(--space-6);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

.hero h1 {
  font-size: var(--text-6xl);
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-image-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-image-frame {
  width: 340px;
  height: 340px;
  border-radius: 50%;
  position: relative;
}

.hero-image-frame::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--gradient);
  opacity: 0.6;
  animation: rotate 8s linear infinite;
}

.hero-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  position: relative;
  z-index: 1;
  border: 4px solid var(--bg-primary);
}

.hero-image-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  filter: blur(40px);
  z-index: -1;
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-size: var(--text-3xl);
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
  color: white;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
}

.btn-ghost {
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
}

.btn-icon:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover .card-glow {
  opacity: 1;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--accent);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  margin-bottom: var(--space-3);
}

.card p {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.card:hover .card-link svg {
  transform: translateX(4px);
}

/* Media card (for conferences, podcasts, etc.) */
.media-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.media-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.media-card-image {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  background: var(--bg-tertiary);
}

.media-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.media-card:hover .media-card-image img {
  transform: scale(1.05);
}

.media-card-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.media-card:hover .media-card-play {
  opacity: 1;
}

.media-card-play-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 20px rgba(20, 184, 166, 0.4);
}

.media-card-body {
  padding: var(--space-5);
}

.media-card-body h4 {
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
}

.media-card-body p {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.media-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-12);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--text-muted);
}

.section-header-left {
  text-align: left;
  margin-left: 0;
}

.section-line {
  width: 48px;
  height: 3px;
  background: var(--gradient);
  border-radius: 2px;
  margin-bottom: var(--space-4);
}

.section-header-left .section-line {
  margin-left: 0;
}

/* --- Testimonials --- */
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
  position: relative;
}

.testimonial-quote {
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  position: relative;
}

.testimonial-quote::before {
  content: '\201C';
  position: absolute;
  top: -20px;
  left: -8px;
  font-size: 4rem;
  color: var(--accent);
  opacity: 0.3;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-subtle);
}

.testimonial-name {
  font-weight: 600;
  font-size: var(--text-sm);
}

.testimonial-role {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* --- Books Section --- */
.book-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

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

.book-cover {
  width: 180px;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-lg);
}

.book-info h3 {
  margin-bottom: var(--space-2);
}

.book-meta {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.book-links {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

/* --- Social Links --- */
.social-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: 100px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  color: var(--accent);
}

.social-link svg {
  width: 16px;
  height: 16px;
}

/* --- Tags --- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: 100px;
  font-size: var(--text-xs);
  font-weight: 500;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid rgba(20, 184, 166, 0.2);
}

/* --- Timeline (for bio) --- */
.timeline {
  position: relative;
  padding-left: var(--space-10);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-medium);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-10);
}

.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--space-10) + 8px);
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  z-index: 1;
}

.timeline-date {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-2);
}

.timeline-content h3 {
  margin-bottom: var(--space-2);
  font-size: var(--text-lg);
}

.timeline-content p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  max-width: 320px;
}

.footer-heading {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.footer-link {
  display: block;
  padding: var(--space-1) 0;
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  padding: var(--space-4);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--border-radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-xl);
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}

.modal-header h3 {
  font-size: var(--text-lg);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.modal-wide {
  max-width: 700px;
}

/* Modal types */
.modal-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.modal-icon.success {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
}

.modal-icon.error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.modal-icon.info {
  background: var(--accent-glow);
  color: var(--accent);
}

.modal-icon svg {
  width: 24px;
  height: 24px;
}

/* --- Video Player Overlay --- */
.video-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.video-overlay.open {
  opacity: 1;
  visibility: visible;
}

.video-container {
  width: 90%;
  max-width: 960px;
  aspect-ratio: 16/9;
  position: relative;
}

.video-container video {
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius);
}

.video-close {
  position: absolute;
  top: -48px;
  right: 0;
  color: white;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Page Header (for inner pages) --- */
.page-header {
  padding: calc(var(--nav-height) + var(--space-16)) 0 var(--space-12);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.page-header-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 80% at 20% 100%, rgba(20, 184, 166, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 80% 0%, rgba(99, 102, 241, 0.04) 0%, transparent 60%);
  pointer-events: none;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  margin-bottom: var(--space-4);
}

.page-header p {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 600px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-6);
}

.breadcrumb a {
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--text-primary);
}

.breadcrumb-sep {
  color: var(--text-muted);
  opacity: 0.5;
}

/* --- Bio / Content Prose --- */
.prose {
  max-width: 720px;
}

.prose h2 {
  font-size: var(--text-3xl);
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
}

.prose h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.prose p {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}

.prose img {
  border-radius: var(--border-radius);
  margin: var(--space-8) 0;
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  padding-left: var(--space-6);
  margin: var(--space-8) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.prose ul, .prose ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-5);
}

.prose li {
  list-style: disc;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.prose ol li {
  list-style: decimal;
}

.prose .drop-cap::first-letter {
  float: left;
  font-size: 3.5em;
  line-height: 0.8;
  padding-right: var(--space-3);
  font-weight: 700;
  color: var(--accent);
}

/* --- Scroll to top --- */
.scroll-top {
  position: fixed;
  bottom: var(--space-8);
  left: var(--space-8);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--accent-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: 100;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--accent-glow);
}

.scroll-top svg {
  width: 20px;
  height: 20px;
}

/* --- Calendly Widget Override --- */
.calendly-badge-widget {
  z-index: 50 !important;
}

/* --- Loading Skeleton --- */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 0%, var(--bg-card) 50%, var(--bg-tertiary) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--border-radius-sm);
}

/* --- Animations --- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-in:nth-child(2) { transition-delay: 0.1s; }
.animate-in:nth-child(3) { transition-delay: 0.2s; }
.animate-in:nth-child(4) { transition-delay: 0.3s; }
.animate-in:nth-child(5) { transition-delay: 0.4s; }
.animate-in:nth-child(6) { transition-delay: 0.5s; }

/* --- Dynamic Content Pages (items loaded via JS) --- */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}

.content-empty {
  text-align: center;
  padding: var(--space-20) 0;
  color: var(--text-muted);
}

.content-empty svg {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  opacity: 0.3;
}

/* --- Divider --- */
.divider {
  height: 1px;
  background: var(--border-subtle);
  margin: var(--space-12) 0;
}

/* --- Resume/CV Specific --- */
.cv-section {
  margin-bottom: var(--space-12);
}

.cv-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-8);
}

.cv-sidebar {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.cv-entry {
  padding-bottom: var(--space-6);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}

.cv-entry:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.cv-entry h4 {
  margin-bottom: var(--space-1);
}

.cv-entry .company {
  font-size: var(--text-sm);
  color: var(--accent);
  margin-bottom: var(--space-2);
}

.cv-entry p {
  font-size: var(--text-sm);
}

.cv-entry ul {
  padding-left: var(--space-5);
  margin-top: var(--space-2);
}

.cv-entry li {
  list-style: disc;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}

/* Skill bars */
.skill-bar {
  margin-bottom: var(--space-3);
}

.skill-bar-header {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-sm);
  margin-bottom: var(--space-1);
}

.skill-bar-track {
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: var(--gradient);
  border-radius: 3px;
  transition: width 1s ease;
}

/* --- Press Kit --- */
.press-photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}

.press-photo {
  aspect-ratio: 1;
  border-radius: var(--border-radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-base);
}

.press-photo:hover {
  transform: scale(1.02);
}

.press-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --text-6xl: 2.75rem;
    --text-5xl: 2.25rem;
    --text-4xl: 1.875rem;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-8);
  }

  .hero-text {
    max-width: 100%;
    order: 2;
  }

  .hero-image-wrap {
    order: 1;
  }

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

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

  .hero-image-frame {
    width: 260px;
    height: 260px;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

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

  .book-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .book-cover {
    margin: 0 auto;
  }

  .cv-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

@media (max-width: 768px) {
  :root {
    --text-6xl: 2.25rem;
    --text-5xl: 1.875rem;
    --text-4xl: 1.5rem;
    --text-3xl: 1.25rem;
    --space-24: 4rem;
    --space-16: 3rem;
  }

  .section {
    padding: var(--space-16) 0;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: var(--space-4);
  }

  .hero-image-frame {
    width: 200px;
    height: 200px;
  }

  .hero h1 {
    font-size: var(--text-4xl);
  }

  .modal {
    margin: var(--space-4);
  }

  .scroll-top {
    bottom: var(--space-4);
    right: var(--space-4);
  }

  .card {
    padding: var(--space-6);
  }

  .press-photo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .press-photo-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- Utility: visually hidden --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}