/* ============================================
   🌙 THEME SYSTEM - نظام المواضيع
   ============================================ */

/* ========== THEME TOGGLE BUTTON ========== */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-lg);
}

.theme-toggle:hover {
  background-color: var(--color-border);
  transform: scale(1.05);
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* ========== THEME INITIALIZATION ========== */
html {
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

/* ========== LIGHT MODE (DEFAULT) ========== */
[data-theme="light"] {
  --color-background: #ffffff;
  --color-surface: #f9fafb;
  --color-border: #e5e7eb;
  --color-text: #111827;
  --color-text-secondary: #4b5563;
  --color-text-tertiary: #6b7280;
}

[data-theme="light"] body {
  background-color: #ffffff;
  color: #111827;
}

[data-theme="light"] .card,
[data-theme="light"] .glass-panel {
  background-color: #ffffff;
  border-color: #e5e7eb;
  box-shadow: var(--shadow-sm);
}

[data-theme="light"] .card:hover {
  box-shadow: var(--shadow-md);
}

[data-theme="light"] input,
[data-theme="light"] textarea,
[data-theme="light"] select {
  background-color: #ffffff;
  border-color: #e5e7eb;
  color: #111827;
}

[data-theme="light"] input::placeholder,
[data-theme="light"] textarea::placeholder {
  color: #9ca3af;
}

[data-theme="light"] .btn-secondary {
  background-color: #f3f4f6;
  color: #111827;
  border-color: #e5e7eb;
}

[data-theme="light"] .btn-secondary:hover {
  background-color: #e5e7eb;
}

[data-theme="light"] code {
  background-color: #f9fafb;
  color: #dc2626;
}

[data-theme="light"] pre {
  background-color: #f9fafb;
}

/* ========== DARK MODE ========== */
[data-theme="dark"] {
  --color-background: #0f172a;
  --color-surface: #1e293b;
  --color-border: #334155;
  --color-text: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
}

[data-theme="dark"] body {
  background-color: #0f172a;
  color: #f1f5f9;
}

[data-theme="dark"] .card,
[data-theme="dark"] .glass-panel {
  background-color: #1e293b;
  border-color: #334155;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .card:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  background-color: #1e293b;
  border-color: #334155;
  color: #f1f5f9;
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
  color: #64748b;
}

[data-theme="dark"] .btn-secondary {
  background-color: #334155;
  color: #f1f5f9;
  border-color: #475569;
}

[data-theme="dark"] .btn-secondary:hover {
  background-color: #475569;
}

[data-theme="dark"] code {
  background-color: #334155;
  color: #f87171;
}

[data-theme="dark"] pre {
  background-color: #334155;
}

[data-theme="dark"] table tbody tr:hover {
  background-color: #334155;
}

[data-theme="dark"] .theme-toggle {
  background-color: #334155;
  border-color: #475569;
  color: #fbbf24;
}

[data-theme="dark"] .theme-toggle:hover {
  background-color: #475569;
}

/* ========== TRANSITION TO THEME ========== */
body,
a,
button,
input,
textarea,
select,
.card,
.glass-panel,
code,
pre {
  transition: background-color var(--transition-base),
              color var(--transition-base),
              border-color var(--transition-base);
}

/* ========== PREFERS COLOR SCHEME ========== */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-background: #ffffff;
    --color-surface: #f9fafb;
    --color-border: #e5e7eb;
    --color-text: #111827;
    --color-text-secondary: #4b5563;
    --color-text-tertiary: #6b7280;
  }
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-background: #0f172a;
    --color-surface: #1e293b;
    --color-border: #334155;
    --color-text: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-tertiary: #94a3b8;
  }
}

/* ========== REDUCE MOTION ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========== HIGH CONTRAST MODE ========== */
@media (prefers-contrast: more) {
  :root {
    --color-border: var(--color-gray-400);
  }

  button {
    border: 2px solid currentColor;
  }

  .card {
    border-width: 2px;
  }

  input,
  textarea,
  select {
    border-width: 2px;
  }
}