/* Ahmad Hassan CV — typography: Cormorant Garamond + Source Sans 3 */

:root {
  --bg-deep: #0f1419;
  --bg-elevated: #171e26;
  --bg-card: #1c252f;
  --text: #e8eaed;
  --text-muted: #9aa3ad;
  --accent: #c9a227;
  --accent-soft: rgba(201, 162, 39, 0.15);
  --accent-glow: rgba(201, 162, 39, 0.35);
  --border: rgba(255, 255, 255, 0.08);
  --font-sans: "Source Sans 3", system-ui, sans-serif;
  --font-display: "Cormorant Garamond", Georgia, serif;
  --space-xs: 0.35rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --radius: 12px;
  --header-h: 4rem;
  --max: 1100px;
  --narrow: 720px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--accent);
  color: var(--bg-deep);
  font-weight: 600;
  z-index: 1000;
  border-radius: var(--radius);
  transition: top 0.2s;
}

.skip-link:focus {
  top: var(--space-sm);
  outline: 2px solid var(--text);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #e4c04a;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

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

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(15, 20, 25, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}

.site-header.is-scrolled {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.header-inner {
  height: 100%;
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.logo:hover {
  color: var(--accent);
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-lg);
}

.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.site-nav a:hover,
.site-nav a[aria-current="true"] {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: transparent;
  border: none;
  padding: 8px;
  cursor: pointer;
}

.nav-toggle-bar {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

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

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: var(--space-md);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav ul {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + var(--space-xl)) 0 var(--space-xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, var(--accent-soft), transparent 50%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(80, 120, 180, 0.12), transparent 45%),
    linear-gradient(180deg, var(--bg-deep) 0%, #121920 100%);
  pointer-events: none;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, black 20%, transparent 70%);
  opacity: 0.4;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--space-sm);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 8vw, 4.25rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 var(--space-md);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 0%, #c5cdd6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 36rem;
  margin: 0 0 var(--space-lg);
}

.hero-lead strong {
  color: var(--text);
  font-weight: 600;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.pill {
  display: inline-block;
  padding: 0.4rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-deep);
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
  color: var(--bg-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

.section-alt {
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  text-align: center;
  margin: 0 0 var(--space-md);
  color: var(--text);
}

.section-intro {
  color: var(--text-muted);
  margin: 0 0 var(--space-lg);
  max-width: 40rem;
}

.section-intro.centered {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-intro strong {
  color: var(--text);
}

.section-intro em {
  color: #b8c0ca;
  font-style: italic;
}

/* About */
.about-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.about-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 0 0 var(--space-sm);
  color: var(--accent);
}

.about-card p {
  margin: 0;
  color: var(--text-muted);
}

.checklist {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.checklist li {
  margin-bottom: var(--space-xs);
}

.checklist li::marker {
  color: var(--accent);
}

/* Timeline */
.timeline {
  list-style: none;
  margin: var(--space-lg) auto 0;
  padding: 0;
  max-width: 800px;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), rgba(201, 162, 39, 0.2));
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  padding-left: 3rem;
  padding-bottom: var(--space-xl);
}

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

.timeline-marker {
  position: absolute;
  left: 4px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.timeline-body {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  transition: border-color 0.25s;
}

.timeline-body:hover {
  border-color: rgba(201, 162, 39, 0.35);
}

.timeline-date {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.timeline-head h3 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  margin: 0 0 0.25rem;
  color: var(--text);
}

.timeline-org {
  margin: 0;
  font-weight: 600;
  color: #c5cdd6;
}

.timeline-location {
  margin: 0.15rem 0 var(--space-sm);
  font-size: 0.95rem;
  color: var(--text-muted);
}

.timeline-desc {
  margin: 0 0 var(--space-md);
  color: var(--text-muted);
}

.tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  vertical-align: middle;
  margin-left: 0.25rem;
}

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

/* Education */
.edu-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  margin-top: var(--space-lg);
}

.edu-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

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

.edu-card-secondary {
  grid-column: 1 / -1;
  max-width: 100%;
}

@media (min-width: 900px) {
  .edu-card:not(.edu-card-secondary) {
    grid-column: span 1;
  }
}

.edu-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--bg-deep);
  background: var(--accent);
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  margin-bottom: var(--space-sm);
}

.edu-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 var(--space-xs);
  color: var(--text);
}

.edu-school {
  font-weight: 600;
  color: #c9a227;
  margin: 0 0 0.25rem;
}

.edu-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-sm);
}

.edu-text {
  color: var(--text-muted);
  margin: 0 0 var(--space-sm);
}

.edu-note {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
}

/* Skills */
.skills-wrap {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: var(--space-lg);
}

.skill-group h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--accent);
  margin: 0 0 var(--space-sm);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-xs);
}

.skill-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.skill-tags li {
  padding: 0.4rem 0.75rem;
  font-size: 0.875rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
}

/* Contact */
.contact-block {
  text-align: center;
}

.contact-block .section-intro {
  margin-inline: auto;
}

.contact-list {
  list-style: none;
  margin: var(--space-lg) auto 0;
  padding: 0;
  max-width: 420px;
  text-align: left;
}

.contact-list li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

@media (max-width: 500px) {
  .contact-list li {
    grid-template-columns: 1fr;
  }
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

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

/* Footer */
.site-footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border);
  background: var(--bg-deep);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.site-footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-top {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
}

.footer-top:hover {
  color: var(--accent);
}

/* Desktop-only: block phones and tablets (viewport under 1280px wide) */
.desktop-gate {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  box-sizing: border-box;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: var(--bg-deep);
  color: var(--text);
  text-align: center;
}

.desktop-gate-inner {
  max-width: 28rem;
}

.desktop-gate-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 var(--space-md);
  color: var(--accent);
}

.desktop-gate p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.55;
}

@media (max-width: 1279px) {
  .desktop-gate {
    display: flex;
  }

  html {
    overflow: hidden;
    height: 100%;
  }

  body {
    overflow: hidden;
    height: 100%;
    touch-action: none;
  }
}

@media print {
  .desktop-gate {
    display: none !important;
  }

  .site-header,
  .nav-toggle,
  .hero-actions,
  .footer-top,
  .skip-link {
    display: none !important;
  }

  body {
    background: #fff;
    color: #111;
  }

  .hero-bg {
    display: none;
  }

  .hero h1 {
    color: #111;
    -webkit-text-fill-color: #111;
  }

  a {
    color: #000;
  }
}