/* ==============================================================================
   ASUNAK Design System — Core Stylesheet (CSS Custom Properties & Components)
   Version: 1.0.0 (Phase 2 Prototype - 100% Local / Zero CDN)
   Supports: LTR (en, it) and RTL (ar), Light & Dark Theme, WCAG 2.2 AA Contrast
   ============================================================================== */

:root {
  /* Colors — Light Mode (Default) */
  --color-bg-canvas: #FAFAFA;
  --color-surface-card: #FFFFFF;
  --color-surface-elevated: #F0F1F3;
  --color-surface-sunken: #F4F5F7;
  
  --color-border-subtle: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.16);
  --color-border-focus: #2563EB;
  
  --color-text-primary: #111315;
  --color-text-secondary: #5C646C;
  --color-text-muted: #8B949E;
  --color-text-inverse: #FFFFFF;
  
  --color-brand-primary: #2563EB;
  --color-brand-accent: #3B82F6;
  --color-brand-hover: #1D4ED8;
  
  --color-state-success: #10B981;
  --color-state-success-bg: rgba(16, 185, 129, 0.12);
  --color-state-warning: #F59E0B;
  --color-state-warning-bg: rgba(245, 158, 11, 0.12);
  --color-state-danger: #EF4444;
  --color-state-danger-bg: rgba(239, 68, 68, 0.12);
  --color-state-info: #0EA5E9;
  --color-state-info-bg: rgba(14, 165, 233, 0.12);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* Spacing Scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Border Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Typography — 100% Local Native System Stacks (Instant Zero-Latency Render) */
  --font-family-latin: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-arabic: system-ui, -apple-system, "Segoe UI", Tahoma, Arial, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  
  --font-current: var(--font-family-latin);
  --line-height-current: 1.6;

  /* Motion */
  --motion-duration-fast: 150ms;
  --motion-duration-normal: 220ms;
  --motion-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --motion-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* Dark Mode Tokens */
[data-theme="dark"],
.theme-dark {
  --color-bg-canvas: #0C0D0E;
  --color-surface-card: #141618;
  --color-surface-elevated: #1C1F22;
  --color-surface-sunken: #08090A;
  
  --color-border-subtle: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --color-border-focus: #3B82F6;
  
  --color-text-primary: #F4F5F7;
  --color-text-secondary: #9BA1A6;
  --color-text-muted: #687076;
  --color-text-inverse: #111315;
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
}

/* RTL Typography Adaptation */
[dir="rtl"],
html[lang="ar"] {
  --font-current: var(--font-family-arabic);
  --line-height-current: 1.75;
}

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

body {
  font-family: var(--font-current);
  font-size: 16px;
  line-height: var(--line-height-current);
  color: var(--color-text-primary);
  background-color: var(--color-bg-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container-wide {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container-narrow {
  width: 100%;
  max-width: 820px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

/* ==============================================================================
   Typography Components
   ============================================================================== */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.display-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.h1-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  line-height: 1.2;
}

.h2-title {
  font-size: 1.75rem;
  line-height: 1.25;
}

.h3-title {
  font-size: 1.25rem;
  line-height: 1.35;
}

.text-lead {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-sm {
  font-size: 0.875rem;
}

.text-mono {
  font-family: var(--font-family-mono);
}

/* ==============================================================================
   Buttons & Action Controls
   ============================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding-inline: var(--space-4);
  padding-block: var(--space-2);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--motion-duration-fast) var(--motion-ease-out);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-brand-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background-color: var(--color-brand-hover);
}

.btn-secondary {
  background-color: var(--color-surface-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}
.btn-secondary:hover {
  background-color: var(--color-surface-card);
  border-color: var(--color-brand-primary);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}
.btn-outline:hover {
  background-color: var(--color-surface-elevated);
}

.btn-danger {
  background-color: var(--color-state-danger);
  color: var(--color-text-inverse);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
}
.btn-ghost:hover {
  color: var(--color-text-primary);
  background-color: var(--color-surface-elevated);
}

.btn-sm {
  padding-inline: var(--space-3);
  padding-block: var(--space-1);
  font-size: 0.75rem;
}

.btn-lg {
  padding-inline: var(--space-6);
  padding-block: var(--space-3);
  font-size: 1rem;
}

/* ==============================================================================
   Cards & Surfaces
   ============================================================================== */
.card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-body {
  padding: var(--space-6);
}

.card-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-sunken);
}

/* ==============================================================================
   Badges & Status Indicators
   ============================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding-inline: var(--space-2);
  padding-block: 2px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background-color: var(--color-state-success-bg);
  color: var(--color-state-success);
}

.badge-warning {
  background-color: var(--color-state-warning-bg);
  color: var(--color-state-warning);
}

.badge-danger {
  background-color: var(--color-state-danger-bg);
  color: var(--color-state-danger);
}

.badge-info {
  background-color: var(--color-state-info-bg);
  color: var(--color-state-info);
}

.badge-neutral {
  background-color: var(--color-surface-elevated);
  color: var(--color-text-secondary);
}

/* ==============================================================================
   Vector Icons (Lucide / Feather Standard)
   ============================================================================== */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  transition: stroke var(--motion-duration-fast) var(--motion-ease-out), transform var(--motion-duration-fast) var(--motion-ease-out);
}
.icon-xs { width: 12px; height: 12px; }
.icon-sm { width: 14px; height: 14px; }
.icon-md { width: 18px; height: 18px; }
.icon-lg { width: 22px; height: 22px; }
.icon-xl { width: 32px; height: 32px; }
.icon-2xl { width: 44px; height: 44px; }

/* ==============================================================================
   Forms & Inputs
   ============================================================================== */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.form-label .required {
  color: var(--color-state-danger);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding-inline: var(--space-3);
  padding-block: var(--space-2);
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--color-text-primary);
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--motion-duration-fast) var(--motion-ease-out);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-help {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* ==============================================================================
   Global Header & Navigation
   ============================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-surface-card);
  border-bottom: 1px solid var(--color-border-subtle);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: background-color var(--motion-duration-fast), border-color var(--motion-duration-fast);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  position: relative;
}

.brand-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--motion-duration-fast);
  padding: 6px 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-brand-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-brand-primary);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Dropdown Animation */
@keyframes dropdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ==============================================================================
   Corner Language Switcher with Flags
   ============================================================================== */
.lang-switcher-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.lang-trigger-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full, 9999px);
  color: var(--color-text-primary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--motion-duration-fast);
  user-select: none;
}

.lang-trigger-btn:hover,
.lang-trigger-btn[aria-expanded="true"] {
  border-color: var(--color-brand-primary);
  background: var(--color-surface-card);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.flag-img {
  width: 18px;
  height: 12px;
  border-radius: 2px;
  object-fit: cover;
  display: inline-block;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
  flex-shrink: 0;
}

.lang-code-text {
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.lang-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  inset-inline-end: 0;
  min-width: 170px;
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  padding: 6px;
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 1050;
}

.lang-dropdown-menu.show {
  display: flex;
  animation: dropdownFadeIn 0.15s ease-out;
}

.lang-option-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: start;
  transition: background var(--motion-duration-fast), color var(--motion-duration-fast);
}

.lang-option-btn:hover {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
}

.lang-option-btn.active {
  background: rgba(56, 189, 248, 0.12);
  color: var(--color-brand-primary);
  font-weight: 600;
}

.lang-option-btn .lang-label {
  flex: 1;
}

/* ==============================================================================
   Categorized Workspace Dropdown (Logged In)
   ============================================================================== */
.workspace-dropdown-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.workspace-trigger-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  cursor: pointer;
}

.workspace-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  inset-inline-end: 0;
  width: 290px;
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
  padding: var(--space-3);
  display: none;
  flex-direction: column;
  gap: 3px;
  z-index: 1050;
}

.workspace-dropdown-menu.show {
  display: flex;
  animation: dropdownFadeIn 0.15s ease-out;
}

.dropdown-category-header {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  padding: 6px 8px 2px;
  margin-top: 4px;
}

.dropdown-item-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: background var(--motion-duration-fast);
}

.dropdown-item-link:hover {
  background: var(--color-surface-elevated);
}

.dropdown-item-link .item-title {
  font-size: 0.82rem;
  font-weight: 600;
  display: block;
  color: var(--color-text-primary);
}

.dropdown-item-link .item-subtitle {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  display: block;
  margin-top: 1px;
}

.dropdown-divider {
  height: 1px;
  background: var(--color-border-subtle);
  margin: 6px 0;
}

/* ==============================================================================
   Mobile Navigation Toggle & Drawer
   ============================================================================== */
.mobile-nav-toggle {
  display: none;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-primary);
  padding: 8px 10px;
  cursor: pointer;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  transition: background var(--motion-duration-fast);
}

.mobile-nav-toggle:hover {
  background: var(--color-surface-card);
  border-color: var(--color-brand-primary);
}

.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

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

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  inset-inline-end: 0;
  width: min(88vw, 360px);
  height: 100vh;
  background: var(--color-surface-card);
  border-inline-start: 1px solid var(--color-border-subtle);
  z-index: 1101;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  box-shadow: -15px 0 35px rgba(0, 0, 0, 0.35);
  overflow-y: auto;
}

[dir="rtl"] .mobile-nav-drawer {
  transform: translateX(-100%);
}

.mobile-nav-drawer.open {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
}

.mobile-drawer-body {
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  flex: 1;
}

.mobile-nav-section-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--motion-duration-fast);
}

.mobile-nav-item a:hover {
  background: var(--color-surface-elevated);
  color: var(--color-brand-primary);
}

.mobile-flags-bar {
  display: flex;
  gap: var(--space-2);
}

.mobile-flag-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface-elevated);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--motion-duration-fast);
}

.mobile-flag-btn.active {
  border-color: var(--color-brand-primary);
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-brand-primary);
}

/* Directional Icon Flipping */
[dir="rtl"] .icon-flip {
  transform: scaleX(-1);
}

/* ==============================================================================
   Table & Queue Components
   ============================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: start;
}

.table th {
  padding: var(--space-3) var(--space-4);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-sunken);
}

.table td {
  padding: var(--space-4);
  font-size: 0.875rem;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-primary);
}

.table tr:hover td {
  background-color: var(--color-surface-elevated);
}

/* ==============================================================================
   Interactive Video Player & Watermark Overlay
   ============================================================================== */
.video-review-canvas {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.video-element {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.watermark-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: rotate(-15deg);
  opacity: 0.18;
  color: #fff;
  font-size: clamp(1.2rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  user-select: none;
}

.timeline-bar {
  position: relative;
  height: 10px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
  margin-block: var(--space-2);
}

.timeline-progress {
  height: 100%;
  background-color: var(--color-brand-primary);
  border-radius: var(--radius-full);
  width: 32%;
}

.timeline-pin {
  position: absolute;
  top: -4px;
  width: 8px;
  height: 18px;
  background-color: var(--color-state-warning);
  border-radius: var(--radius-xs);
  transform: translateX(-50%);
  cursor: pointer;
}

/* ==============================================================================
   Responsive Layout Rules
   ============================================================================== */
@media (max-width: 992px) {
  .nav-links {
    display: none;
  }
  .mobile-nav-toggle {
    display: inline-flex;
  }
}

@media (max-width: 768px) {
  .display-title {
    font-size: 2.25rem;
  }
  
  .h1-title {
    font-size: 1.75rem;
  }

  .brand-logo img {
    height: 26px !important;
  }

  .lang-code-text {
    display: none;
  }

  .workspace-trigger-btn span {
    display: none;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}