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

:root {
  --ink:        #1a1a1a;
  --ink-muted:  #6b6b6b;
  --ink-faint:  #a0a0a0;
  --bg:         #fafaf8;
  --bg-alt:     #f3f2ef;
  --border:     #e4e3df;
  --accent:     #1e4d8c;
  --accent-light: #e8eef7;
  --tag-bg:     #eef0f4;
  --tag-ink:    #3a4a6b;
  --radius:     10px;
  --radius-lg:  16px;
  --transition: 0.2s ease;

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }

/* ─── Nav ───────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 60px;
  background: rgba(250, 250, 248, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-muted);
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--ink); }

.lang-toggle {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-light);
  border: none;
  padding: 6px 14px;
  border-radius: 99px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.lang-toggle:hover {
  background: var(--accent);
  color: #fff;
}

/* ─── Hero ──────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 2.5rem 60px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  max-width: 680px;
  position: relative;
  z-index: 2;
  animation: fadeUp 0.8s ease both;
}

.hero-label {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.hero-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(20px, 3vw, 28px);
  color: var(--ink-muted);
  margin-bottom: 1.5rem;
}

.hero-bio {
  font-size: 16px;
  color: var(--ink-muted);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 99px;
  transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: #163d72;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 28px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 99px;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.btn-secondary:hover {
  border-color: var(--ink);
  background: var(--bg-alt);
  transform: translateY(-1px);
}

/* Hero decoration */
.hero-decoration {
  position: absolute;
  right: -80px;
  top: 50%;
  transform: translateY(-50%);
  width: 520px;
  height: 520px;
  pointer-events: none;
}

.deco-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border);
}

.deco-ring-1 {
  width: 520px; height: 520px;
  top: 0; left: 0;
  animation: spin 40s linear infinite;
}

.deco-ring-2 {
  width: 360px; height: 360px;
  top: 80px; left: 80px;
  border-color: var(--accent-light);
  animation: spin 28s linear infinite reverse;
}

.deco-ring-3 {
  width: 200px; height: 200px;
  top: 160px; left: 160px;
  background: var(--accent-light);
  border-color: transparent;
}

/* ─── Sections ──────────────────────────────────────────── */
.section { padding: 100px 2.5rem; }
.section--alt { background: var(--bg-alt); }

.container {
  max-width: 1000px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.section-header p {
  font-size: 16px;
  color: var(--ink-muted);
}

/* ─── Projects ──────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.project-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.07);
}

.project-card--featured {
  border-color: var(--accent-light);
  background: linear-gradient(135deg, #fff 60%, var(--accent-light));
}

.project-tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 10px;
  border-radius: 99px;
  width: fit-content;
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--ink);
}

.project-card p {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.7;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.project-tech span {
  font-size: 12px;
  font-weight: 400;
  color: var(--tag-ink);
  background: var(--tag-bg);
  padding: 4px 10px;
  border-radius: 99px;
}

.project-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  margin-top: 0.25rem;
  transition: letter-spacing var(--transition);
}

.project-link:hover { letter-spacing: 0.02em; }

/* ─── Skills ────────────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.skill-group {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.skill-group h4 {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.75rem;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skill-list span {
  font-size: 13px;
  font-weight: 400;
  color: var(--ink);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 99px;
}

/* ─── Contact ───────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  max-width: 640px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  transition: transform var(--transition), border-color var(--transition);
}

.contact-card:not(.contact-card--plain):hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.contact-icon {
  font-size: 20px;
  color: var(--accent);
  width: 40px;
  height: 40px;
  background: var(--accent-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 2px;
}

.contact-value {
  font-size: 14px;
  color: var(--ink);
  word-break: break-all;
}

/* ─── Footer ────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 2.5rem;
  text-align: center;
  font-size: 13px;
  color: var(--ink-faint);
}

/* ─── RTL (Arabic) ──────────────────────────────────────── */
body.rtl {
  direction: rtl;
  text-align: right;
}

body.rtl .nav-links { flex-direction: row-reverse; }
body.rtl .hero-decoration { right: auto; left: -80px; }
body.rtl .hero-actions { flex-direction: row-reverse; }
body.rtl .project-tag { margin-right: 0; }

/* ─── Animations ────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

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

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
  nav { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .hero { padding: 90px 1.25rem 60px; }
  .hero-decoration { display: none; }
  .section { padding: 70px 1.25rem; }
  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

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