/* ============================================================
   BASE STYLES — مشترك بين جميع الصفحات
============================================================ */

body {
  font-family: 'Segoe UI', Tahoma, Geneva, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ── Scrollbar ── */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

/* ── Glass card ── */
.glass {
  background: var(--accent-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--accent-border);
}

/* ── Surface card ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

/* ── Code block ── */
.code-block {
  background:    var(--code-bg);
  border:        1px solid var(--code-border);
  border-radius: 0.75rem;
  font-family:   'Courier New', Courier, monospace;
  font-size:     0.8rem;
  color:         var(--code-text);
  direction:     ltr;
  text-align:    left;
  overflow-x:    auto;
}
.code-block pre { margin: 0; white-space: pre; }

/* ── Badge ── */
.badge {
  display:      inline-flex;
  align-items:  center;
  gap:          4px;
  padding:      2px 10px;
  border-radius:999px;
  font-size:    11px;
  font-weight:  600;
  background:   var(--badge-bg);
  color:        var(--badge-text);
  border:       1px solid var(--badge-border);
}

/* ── Section animations ── */
.section-hidden  { display: none; }
.section-visible {
  display:   block;
  animation: csPageFadeIn 0.35s ease;
}
@keyframes csPageFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0);    }
}

/* ── Progress bar ── */
.progress-bar { transition: width 1.2s cubic-bezier(.4,0,.2,1); }

/* ── Accent button ── */
.btn-accent {
  background:  var(--accent);
  color:       #fff;
  border:      none;
  padding:     0.6rem 1.4rem;
  border-radius: 0.75rem;
  font-weight: 600;
  cursor:      pointer;
  transition:  filter 0.2s ease, transform 0.2s ease;
}
.btn-accent:hover {
  filter:    brightness(1.12);
  transform: translateY(-1px);
}

/* ── Tab button ── */
.tab-btn {
  padding:       0.55rem 1.2rem;
  border-radius: 0.75rem;
  font-size:     0.85rem;
  font-weight:   600;
  cursor:        pointer;
  border:        1px solid var(--border);
  background:    var(--bg-card);
  color:         var(--text-secondary);
  transition:    all 0.25s ease;
}
.tab-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.tab-btn.active {
  background:  var(--accent);
  color:       #fff;
  border-color:var(--accent);
  box-shadow:  var(--glow);
}

/* ── Input ── */
.cs-input {
  background:   var(--bg-card);
  border:       1px solid var(--border);
  color:        var(--text-primary);
  border-radius:0.75rem;
  padding:      0.65rem 1rem;
  font-size:    0.875rem;
  width:        100%;
  outline:      none;
  transition:   border-color 0.2s ease;
}
.cs-input:focus { border-color: var(--accent); }
.cs-input::placeholder { color: var(--text-muted); }

/* ── Modal overlay ── */
.modal-overlay {
  position:        fixed;
  inset:           0;
  background:      var(--overlay);
  backdrop-filter: blur(6px);
  z-index:         50;
  display:         none;
  align-items:     center;
  justify-content: center;
  padding:         1rem;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background:    var(--bg-surface);
  border:        1px solid var(--border);
  border-radius: 1.25rem;
  max-width:     520px;
  width:         100%;
  padding:       1.5rem;
  animation:     csPageFadeIn 0.3s ease;
  box-shadow:    var(--shadow);
}

/* ── Theme switcher widget ── */
#cs-theme-switcher {
  display:     flex;
  align-items: center;
  gap:         6px;
  background:  var(--bg-card);
  border:      1px solid var(--border);
  border-radius:999px;
  padding:     4px 8px;
  box-shadow:  var(--shadow-card);
}
.theme-dot {
  width:         26px;
  height:        26px;
  border-radius: 50%;
  cursor:        pointer;
  border:        2px solid transparent;
  transition:    transform 0.2s ease, border-color 0.2s ease;
  position:      relative;
}
.theme-dot:hover         { transform: scale(1.15); }
.theme-dot.active        { border-color: var(--accent); transform: scale(1.1); }
.theme-dot[data-t="dark"]   { background: linear-gradient(135deg,#1e1b4b,#6366f1); }
.theme-dot[data-t="light"]  { background: linear-gradient(135deg,#e0e7ff,#6366f1); }
.theme-dot[data-t="warm"]   { background: linear-gradient(135deg,#fef3c7,#dc2626); }
.theme-dot[data-t="forest"] { background: linear-gradient(135deg,#dcfce7,#16a34a); }

/* ── Header ── */
.cs-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.cs-header h1 { color: var(--header-text); }
.cs-header .subtitle { color: var(--header-sub); }

/* ── Glow text ── */
.glow-text { text-shadow: var(--glow); }

/* ── Divider ── */
.cs-divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 1.5rem 0;
}

/* ── Section heading ── */
.cs-section-title {
  font-size:   1.4rem;
  font-weight: 800;
  color:       var(--text-primary);
  margin-bottom: 0.25rem;
}
.cs-section-sub {
  font-size: 0.875rem;
  color:     var(--text-secondary);
  margin-bottom: 1.5rem;
}