/* ═══════════════════════════════════════════════════════════════
   layout.css — الهيكل العام: Navbar, Hero, Footer, Container
   ═══════════════════════════════════════════════════════════════ */

/* ─── Skip link (A11y) ─── */
.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 9999;
  padding: 10px 16px;
  background: var(--neon);
  color: #0a0a12;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
}
.skip-link:focus {
  left: 50%;
  transform: translateX(-50%);
  top: 12px;
}

/* ─── Navbar ─── */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 12px 28px;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  background: rgba(5, 5, 16, 0.65);
  border-bottom: 1px solid rgba(0, 245, 255, 0.08);
  z-index: 100;
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

[data-theme="light"] .navbar {
  background: rgba(255, 255, 255, 0.7);
  border-bottom: 1px solid rgba(157, 0, 255, 0.08);
}

.navbar.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.logo {
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 2px;
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 20px;
  min-width: 0;
  flex: 1 1 auto;
}

.nav-links {
  display: flex;
  gap: 4px;
  flex-wrap: nowrap;
  overflow: visible;
}

.nav-links a {
  text-decoration: none;
  color: inherit;
  opacity: 0.75;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: 500;
  font-size: 0.84rem;
  transition: all var(--transition-normal);
  position: relative;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ─── Nav Dropdown ─── */
.nav-dropdown {
  position: relative;
  flex-shrink: 0;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  opacity: 0.75;
  font-weight: 500;
  font-size: 0.84rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-normal);
  font-family: inherit;
}

.nav-dropdown-toggle:hover,
.nav-dropdown.active .nav-dropdown-toggle {
  opacity: 1;
  border-color: rgba(0, 245, 255, 0.15);
  background: rgba(0, 245, 255, 0.05);
}

.nav-dropdown-toggle.active {
  opacity: 1;
  color: var(--neon);
  border-color: rgba(0, 245, 255, 0.25);
  background: rgba(0, 245, 255, 0.08);
  font-weight: 700;
}

[data-theme="light"] .nav-dropdown-toggle.active {
  color: var(--purple);
  border-color: rgba(157, 0, 255, 0.2);
  background: rgba(157, 0, 255, 0.06);
}

.nav-dropdown-content {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 180px;
  background: rgba(10, 10, 30, 0.95);
  border: 1px solid rgba(0, 245, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 6px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 200;
  flex-direction: column;
}

[data-theme="light"] .nav-dropdown-content {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(157, 0, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.nav-dropdown:hover .nav-dropdown-content,
.nav-dropdown.open .nav-dropdown-content {
  display: flex;
}

.nav-dropdown-content a {
  padding: 8px 14px !important;
  border-radius: var(--radius-sm);
  font-size: 0.85rem !important;
  opacity: 0.85;
  display: block;
}

.nav-dropdown-content a:hover {
  opacity: 1;
  background: rgba(0, 245, 255, 0.08);
}

[data-theme="light"] .nav-dropdown-content a:hover {
  background: rgba(157, 0, 255, 0.06);
}

.nav-links a:hover {
  opacity: 1;
  border-color: rgba(0, 245, 255, 0.15);
  background: rgba(0, 245, 255, 0.05);
}

.nav-links a.active {
  opacity: 1;
  color: var(--neon);
  border-color: rgba(0, 245, 255, 0.25);
  background: rgba(0, 245, 255, 0.08);
  font-weight: 700;
}

[data-theme="light"] .nav-links a.active {
  color: var(--purple);
  border-color: rgba(157, 0, 255, 0.2);
  background: rgba(157, 0, 255, 0.06);
}

.controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.controls button {
  margin-inline-start: 4px;
  color: var(--neon);
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 245, 255, 0.18);
  background: rgba(0, 245, 255, 0.05);
  font-size: 0.88rem;
  transition: all var(--transition-normal);
}

.controls button:hover {
  background: rgba(0, 245, 255, 0.1);
  box-shadow: 0 0 18px rgba(0, 245, 255, 0.12);
  transform: translateY(-1px);
}

[data-theme="light"] .controls button {
  color: var(--purple);
  border-color: rgba(157, 0, 255, 0.18);
  background: rgba(157, 0, 255, 0.05);
}

/* ─── Hero ─── */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

#bg3d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 20px;
  max-width: 800px;
}

.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  line-height: 1.25;
}

.hero-content p {
  opacity: 0.85;
  margin-bottom: 28px;
  line-height: 1.8;
  font-size: clamp(1rem, 2vw, 1.15rem);
}

.hero-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* ─── Stats Section ─── */
.stats-section {
  position: relative;
  z-index: 1;
  padding: 60px 20px;
  max-width: 1200px;
  margin: -80px auto 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-card {
  text-align: center;
  padding: 28px 16px;
  border-radius: var(--radius-lg);
  background: var(--glass-dark);
  border: 1px solid var(--glass-border-dark);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}

[data-theme="light"] .stat-card {
  background: var(--glass-light);
  border-color: var(--glass-border-light);
}

.stat-icon {
  font-size: 2rem;
  margin-bottom: 10px;
  display: block;
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 900;
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.88rem;
  opacity: 0.7;
  font-weight: 500;
}

/* ─── Features Section ─── */
.features-section {
  position: relative;
  z-index: 1;
  padding: 80px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.features-section .section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.features-section .section-subtitle {
  text-align: center;
  opacity: 0.7;
  margin-bottom: 48px;
  font-size: 1.05rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  background: var(--glass-dark);
  border: 1px solid var(--glass-border-dark);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-neon);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-neon);
  border-color: rgba(0, 245, 255, 0.25);
}

[data-theme="light"] .feature-card {
  background: var(--glass-light);
  border-color: var(--glass-border-light);
}

.feature-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
  display: block;
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-desc {
  opacity: 0.7;
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ─── Footer ─── */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(0, 245, 255, 0.08);
  background: rgba(5, 5, 16, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 48px 28px 24px;
  margin-top: 60px;
}

[data-theme="light"] .site-footer {
  background: rgba(240, 242, 248, 0.9);
  border-top-color: rgba(157, 0, 255, 0.08);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 2fr 1fr;
  gap: 32px;
}

.footer-brand {
  font-size: 1.3rem;
  font-weight: 900;
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
  letter-spacing: 1.5px;
}

.footer-desc {
  opacity: 0.6;
  font-size: 0.88rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-heading {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 14px;
  color: var(--neon);
}

[data-theme="light"] .footer-heading {
  color: var(--purple);
}

.footer-links {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 12px;
}

.footer-links li {
  margin-bottom: 8px;
  white-space: nowrap;
}

.footer-links a {
  opacity: 0.6;
  font-size: 0.88rem;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--neon);
}

[data-theme="light"] .footer-links a:hover {
  color: var(--purple);
}

.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 245, 255, 0.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.footer-copy {
  font-size: 0.82rem;
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.9;
}

[data-theme="light"] .footer-copy {
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Responsive ─── */
@media (max-width: 980px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

.nav-menu-btn {
  display: none;
  padding: 8px 12px;
  font-size: 1.2rem;
  border: 1px solid rgba(0, 245, 255, 0.2);
  background: rgba(0, 245, 255, 0.08);
  color: var(--neon);
  border-radius: var(--radius-md);
  cursor: pointer;
}
[data-theme="light"] .nav-menu-btn {
  border-color: rgba(157, 0, 255, 0.2);
  background: rgba(157, 0, 255, 0.06);
  color: var(--purple);
}

@media (max-width: 1100px) {
  .navbar { padding: 10px 14px; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    flex-wrap: nowrap;
    overflow-x: visible;
    background: rgba(5, 5, 16, 0.98);
    border-bottom: 1px solid rgba(0, 245, 255, 0.15);
    padding: 12px;
    gap: 4px;
  }
  [data-theme="light"] .nav-links {
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: rgba(157, 0, 255, 0.12);
  }
  .navbar.nav-open .nav-links {
    display: flex;
  }
  .nav-menu-btn { display: block; }
}
@media (max-width: 640px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stats-section { margin-top: -40px; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}