/* ==========================================================================
   Components - Navbar, Buttons, Cards, Loader
   ========================================================================== */

/* ========================================
   BACK TO TOP BUTTON
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  left: var(--space-8);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--brand-gradient);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s, visibility .3s, transform .3s;
  z-index: calc(var(--z-fixed) - 1);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(0,0,0,.35);
}

/* ========================================
   PAGE LOADER
   ======================================== */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: var(--z-toast);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    opacity 0.8s var(--ease-out),
    visibility 0.8s var(--ease-out);
}

.page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-logo {
  width: 80px;
  height: 80px;
  position: relative;
  animation: pulse-scale 1.8s var(--ease-in-out) infinite;
}

.loader-logo::before,
.loader-logo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--brand-gradient);
  clip-path: polygon(0 50%, 50% 0, 50% 100%);
  border-radius: 2px;
}

.loader-logo::after {
  background: var(--brand-gradient-reverse);
  transform: translateX(30%) rotate(180deg);
  opacity: 0.7;
}

.loader-text {
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-tertiary);
  font-weight: var(--weight-medium);
  white-space: nowrap;
}

@keyframes pulse-scale {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}

/* ========================================
   NAVBAR
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: var(--z-sticky);
  transition:
    background var(--duration-base) var(--ease-out),
    backdrop-filter var(--duration-base) var(--ease-out),
    border var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.navbar.is-scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom-color: var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  height: 100%;
}

.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* ========================================
   NAVBAR LOGO
   ======================================== */
.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: var(--transition-transform);
  cursor: pointer;
  z-index: 2;
  flex-shrink: 0;
}

.navbar-logo:hover {
  transform: scale(1.03);
}

.navbar-logo-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.navbar-logo-mark svg {
  width: 100%;
  height: 100%;
  display: block;
}

.navbar-logo-img {
  height: 64px;
  width: auto;
  display: block;
  object-fit: contain;
}

/* Light theme: show logo-light, hide logo-dark */
:root .logo-dark {
  display: none;
}
:root .logo-light {
  display: block;
}

/* Dark theme: show logo-dark, hide logo-light */
[data-theme="dark"] .logo-light {
  display: none;
}
[data-theme="dark"] .logo-dark {
  display: block;
}

.navbar-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  gap: 2px;
}

.navbar-logo-text .logo-name {
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1;
}

body[dir="rtl"] .navbar-logo-text .logo-name {
  font-family: var(--font-arabic-display);
  font-size: var(--text-lg);
}

body[dir="ltr"] .navbar-logo-text .logo-name {
  font-family: var(--font-english-display);
}

.navbar-logo-text .logo-tag {
  font-family: var(--font-english-body);
  font-size: 10px;
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  color: var(--text-tertiary);
  line-height: 1;
}

/* ========================================
   NAVBAR NAV (center links)
   ======================================== */
.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex: 1;
  justify-content: center;
}

.navbar-link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  padding: var(--space-2) 0;
  letter-spacing: var(--tracking-wide);
  transition: color var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

body[dir="rtl"] .navbar-link {
  font-family: var(--font-arabic-body);
  font-weight: var(--weight-medium);
  letter-spacing: 0;
}

.navbar-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-gradient);
  transition: width var(--duration-base) var(--ease-out);
  border-radius: 2px;
}

.navbar-link:hover,
.navbar-link.is-active {
  color: var(--text-primary);
}

.navbar-link:hover::after,
.navbar-link.is-active::after {
  width: 100%;
}

/* ========================================
   NAVBAR ACTIONS (right side)
   ======================================== */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* Icon button */
.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition:
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
  position: relative;
  overflow: hidden;
  padding: 0;
}

.icon-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateY(-2px);
  border-color: var(--border-default);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--duration-base) var(--ease-elastic);
}

.icon-btn:hover svg {
  transform: rotate(15deg);
}

/* Language toggle (has text not icon) */
.lang-toggle {
  font-family: var(--font-english-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  padding-inline: var(--space-4);
  width: auto;
  min-width: 44px;
  height: 40px;
}

.lang-toggle:hover svg {
  transform: none;
}

.lang-toggle span {
  display: inline-block;
}

/* Theme toggle - sun/moon */
.theme-toggle .sun,
.theme-toggle .moon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-elastic);
}

.theme-toggle .sun {
  opacity: 1;
}

.theme-toggle .moon {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(-90deg) scale(0.5);
}

[data-theme="dark"] .theme-toggle .sun {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-toggle .moon {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0) scale(1);
}

.theme-toggle:hover .sun,
.theme-toggle:hover .moon {
  transform: translate(-50%, -50%) rotate(15deg);
}

[data-theme="dark"] .theme-toggle:hover .moon {
  transform: translate(-50%, -50%) rotate(15deg);
}

/* Mobile menu (hidden by default, shown only on mobile via media query) */
.mobile-menu {
  display: none;
}

/* Mobile menu button */
.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  padding: 0;
}

.mobile-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--duration-base) var(--ease-out);
  border-radius: 2px;
}

.mobile-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  text-transform: uppercase;
}

body[dir="rtl"] .btn {
  text-transform: none;
  font-family: var(--font-arabic-body);
  font-weight: var(--weight-bold);
}

.btn-primary {
  background: var(--brand-gradient);
  color: white;
  box-shadow: var(--shadow-brand);
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--brand-gradient-reverse);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}

.btn-primary span {
  position: relative;
  z-index: 1;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(107, 63, 140, 0.35);
}

.btn-primary:hover::before {
  opacity: 1;
}

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

.btn-secondary:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.btn-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  color: var(--brand-purple);
  position: relative;
  padding-bottom: 4px;
}

[data-theme="dark"] .btn-arrow {
  color: var(--brand-purple-light);
}

.btn-arrow::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform-origin: right;
  transform: scaleX(0);
  transition: transform var(--duration-base) var(--ease-out);
}

.btn-arrow:hover::after {
  transform-origin: left;
  transform: scaleX(1);
}

.btn-arrow svg {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-base) var(--ease-out);
}

.btn-arrow:hover svg {
  transform: translateX(4px);
}

body[dir="rtl"] .btn-arrow:hover svg {
  transform: translateX(-4px);
}

body[dir="rtl"] .btn-arrow svg {
  transform: scaleX(-1);
}

/* ========================================
   SECTION LABELS
   ======================================== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--brand-purple);
  margin-bottom: var(--space-4);
  font-family: var(--font-english-body);
  padding: 0;
}

body[dir="rtl"] .section-label {
  font-family: var(--font-arabic-body);
  letter-spacing: var(--tracking-wide);
  text-transform: none;
}

[data-theme="dark"] .section-label {
  color: var(--brand-orange-light);
}

.section-label::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--brand-gradient);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: var(--weight-semibold);
  line-height: 1.1;
  margin-bottom: var(--space-6);
  letter-spacing: var(--tracking-tight);
}

body[dir="rtl"] .section-title {
  font-weight: var(--weight-bold);
  line-height: 1.3;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 60ch;
  line-height: var(--leading-relaxed);
}

/* Centered section intro (used above grids) */
.section-intro {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-16);
}

.section-intro .section-label {
  justify-content: center;
}

.section-intro .section-subtitle {
  margin: 0 auto;
}

/* ========================================
   CARDS
   ======================================== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  padding: var(--space-8);
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-default);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ========================================
   LANGUAGE VISIBILITY
   ======================================== */
body[dir="ltr"] [data-lang="ar"] {
  display: none;
}
body[dir="rtl"] [data-lang="en"] {
  display: none;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .navbar-nav {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 380px;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-card);
    padding: calc(var(--header-height) + var(--space-8)) var(--space-8)
      var(--space-8);
    transform: translateX(100%);
    visibility: hidden;
    transition:
      transform var(--duration-slow) var(--ease-out),
      visibility 0s var(--duration-slow);
    z-index: calc(var(--z-sticky) - 1);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    border-left: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-xl);
    overflow-y: auto;
  }

  body[dir="rtl"] .mobile-menu {
    right: auto;
    left: 0;
    transform: translateX(-100%);
    border-left: none;
    border-right: 1px solid var(--border-subtle);
  }

  .mobile-menu.is-open,
  body[dir="rtl"] .mobile-menu.is-open {
    transform: translateX(0);
    visibility: visible;
    transition-delay: 0s;
  }

  .mobile-menu .navbar-link {
    font-size: var(--text-2xl);
    font-weight: var(--weight-semibold);
    color: var(--text-primary);
    padding-block: var(--space-3);
    border-bottom: 1px solid var(--border-subtle);
  }

  body[dir="rtl"] .mobile-menu .navbar-link {
    font-weight: var(--weight-bold);
  }

  .mobile-menu .navbar-link:last-child {
    border-bottom: none;
  }
}