/* ============================================
   COMPONENTS — Reusable UI Elements
   ============================================ */

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition-base);
  background: transparent;
}

.navbar.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* --- Logo --- */
.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 1001;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

/* --- Nav Menu --- */
.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-link {
  position: relative;
  padding: 8px 16px;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--accent-glow);
}

.nav-link.active {
  color: var(--accent-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  animation: navIndicator 0.3s ease forwards;
}

@keyframes navIndicator {
  from {
    width: 0;
    opacity: 0;
  }
  to {
    width: 20px;
    opacity: 1;
  }
}

/* --- Navbar Actions --- */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 1001;
}

/* --- Language Switcher --- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-tertiary);
  padding: 4px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-right: var(--space-xs);
}

.lang-btn {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--text-muted);
  background: none;
  border: none;
  padding: 2px 4px;
  cursor: pointer;
  transition: all var(--transition-base);
}

.lang-btn.active {
  color: var(--accent-primary);
}

.lang-divider {
  color: var(--border-color);
  font-size: 10px;
  user-select: none;
}

/* --- Theme Toggle --- */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-base);
  position: relative;
}

.theme-toggle:hover {
  color: var(--accent-primary);
  background: var(--accent-glow);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: all var(--transition-base);
}

/* Dark mode: show sun icon (to switch to light) */
[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

/* Light mode: show moon icon (to switch to dark) */
[data-theme="light"] .theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

[data-theme="light"] .theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* --- Hamburger --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.hamburger:hover {
  background: var(--accent-glow);
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
  background: var(--accent-primary);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
  background: var(--accent-primary);
}

/* --- Mobile Overlay --- */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

/* ============================================
   MOBILE NAVIGATION
   ============================================ */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-3xl) var(--space-xl);
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.2);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
  }

  .navbar-menu.active {
    right: 0;
  }

  .nav-link {
    font-size: var(--text-lg);
    padding: 12px 16px;
    width: 100%;
    border-radius: var(--radius-md);
  }

  .nav-link:hover,
  .nav-link.active {
    background: var(--accent-glow);
  }

  .nav-link.active::after {
    display: none;
  }
}