/* ═══════════════════════════════════════════
   QODRA.TECH — Shared Stylesheet
   ═══════════════════════════════════════════ */

/* Design Tokens */
:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.6);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --gold: #c5a572;
  --gold-dim: rgba(197, 165, 114, 0.3);
  --gold-glow: rgba(197, 165, 114, 0.15);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --green: #22c55e;
  --font-serif: 'Georgia', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1100px;
  --nav-height: 60px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.8;
}

/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(197, 165, 114, 0.12);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
}

.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-primary);
}

.nav-brand span {
  color: var(--gold);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--gold);
  opacity: 1;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  margin: 5px 0;
  transition: 0.3s;
}

/* ─── Page Layout ─── */
.page {
  padding-top: var(--nav-height);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 32px;
}

.section-small {
  padding: 48px 32px;
}

/* ─── Hero ─── */
.hero {
  text-align: center;
  padding: 100px 32px 64px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-arabic {
  font-size: 2.4rem;
  color: var(--gold);
  font-weight: 300;
  margin-bottom: 8px;
}

.hero-name {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.hero-title {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-statement {
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-style: italic;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.divider {
  width: 80px;
  height: 2px;
  background: var(--gold);
  margin: 40px auto;
}

/* ─── Metrics Strip ─── */
.metrics {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px 64px;
}

.metric-box {
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-card);
  border: 1px solid var(--gold-dim);
  border-radius: 8px;
}

.metric-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 8px;
  line-height: 1;
}

.metric-label {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.4;
}

/* ─── Section Headers ─── */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ─── Timeline ─── */
.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

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

.timeline-item {
  position: relative;
  padding: 0 0 40px 36px;
}

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

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--bg-primary);
  border: 2px solid var(--gold);
  border-radius: 50%;
}

.timeline-year {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--gold);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.timeline-role {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-detail {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ─── Cards Grid ─── */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid rgba(197, 165, 114, 0.1);
  border-radius: 10px;
  padding: 32px;
  transition: border-color 0.3s, background 0.3s;
}

.card:hover {
  border-color: var(--gold-dim);
  background: var(--bg-card-hover);
}

.card-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.card p {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ─── Featured Project Card ─── */
.project-featured {
  background: var(--bg-card);
  border: 2px solid var(--gold-dim);
  border-radius: 12px;
  padding: 48px;
  max-width: 800px;
  margin: 0 auto 32px;
}

.project-featured:hover {
  border-color: var(--gold);
}

.project-badge {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-glow);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.project-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--green);
  margin-top: 24px;
}

.project-status .pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.project-featured h3 {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.project-featured .subtitle {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.project-featured p {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.project-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.project-detail-item {
  padding: 16px;
  background: rgba(15, 23, 42, 0.5);
  border-radius: 8px;
}

.project-detail-item strong {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 6px;
}

.project-detail-item span {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ─── Placeholder Card ─── */
.card-placeholder {
  background: var(--bg-card);
  border: 1px dashed var(--text-muted);
  border-radius: 10px;
  padding: 32px;
  text-align: center;
  opacity: 0.5;
}

.card-placeholder h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-muted);
}

.card-placeholder p {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ─── Tech Timeline (horizontal) ─── */
.tech-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.tech-item {
  padding: 20px;
  background: var(--bg-card);
  border-left: 3px solid var(--gold-dim);
  border-radius: 0 8px 8px 0;
}

.tech-item .year {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.tech-item .tech {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.tech-item .desc {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ─── Education Grid ─── */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.edu-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 1px solid rgba(197, 165, 114, 0.08);
}

.edu-item .credential {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 6px;
}

.edu-item .institution {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.edu-item .year {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ─── Footer / Tagline ─── */
.page-footer {
  text-align: center;
  padding: 64px 32px;
  border-top: 1px solid rgba(197, 165, 114, 0.1);
}

.page-footer .pattern {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 3px;
  color: var(--gold);
  text-transform: uppercase;
}

.page-footer .brand-footer {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 16px;
  letter-spacing: 1px;
}

/* ─── Pulse Animation ─── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ═══════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════ */

@media (max-width: 768px) {
  .nav {
    padding: 0 20px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.97);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--gold-dim);
  }

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

  .nav-toggle {
    display: block;
  }

  .hero {
    padding: 64px 20px 48px;
  }

  .hero-name {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 0.85rem;
  }

  .hero-statement {
    font-size: 1.05rem;
  }

  .metrics {
    grid-template-columns: repeat(2, 1fr);
    padding: 0 20px 48px;
  }

  .metrics .metric-box:last-child {
    grid-column: span 2;
  }

  .section {
    padding: 48px 20px;
  }

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

  .tech-timeline {
    grid-template-columns: 1fr;
  }

  .project-featured {
    padding: 28px;
  }

  .project-details {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 0;
  }

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

@media (max-width: 480px) {
  .metrics {
    grid-template-columns: 1fr;
  }

  .metrics .metric-box:last-child {
    grid-column: span 1;
  }

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

  .hero-name {
    font-size: 1.7rem;
  }
}