src/css/base.css

/* Bayan Base Styles — typography & global */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-family-primary);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-body);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ── Selection highlight ── */
::selection {
  background: rgba(107, 163, 224, 0.3);
  color: inherit;
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}
/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
}

/* ── Type scale ── */
.text-display {
  font-size: var(--font-size-display);
  font-weight: var(--font-weight-bold);
  line-height: 1.3;
}

.text-h1 {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  line-height: 1.35;
}

.text-h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
}

.text-h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  line-height: 1.5;
}

.text-body {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-body);
}

.text-caption {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  line-height: 1.6;
}

.text-label {
  font-size: var(--font-size-label);
  font-weight: var(--font-weight-semibold);
  line-height: 1.5;
  letter-spacing: 0.04em;
}

/* ── Semantic text colors ── */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-brand { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }
.text-secondary-brand { color: var(--color-secondary); }

/* ── Page utilities ── */
.page-bg { background-color: var(--color-bg); }
.surface-bg { background-color: var(--color-surface); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page { display: none; }
.page.active { display: block; }

.gradient-bg {
  background: linear-gradient(
    165deg,
    var(--color-bg) 0%,
    var(--color-surface) 50%,
    var(--color-bg) 100%
  );
}

.gradient-accent {
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-secondary) 100%
  );
}

.text-gradient {
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-secondary) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.editor-content {
  font-size: var(--font-size-editor);
  line-height: var(--line-height-editor);
  letter-spacing: var(--letter-spacing-arabic);
}

/* ── Focus ── */
button:focus-visible,
a:focus-visible,
[contenteditable]:focus-visible,
.suggestion-card:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ── Form controls ── */
input[type="checkbox"],
input[type="range"] {
  accent-color: var(--color-primary);
}

/* ── Motion ── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .card-hover:hover {
    transform: none;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse-subtle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

.animate-fade-in { animation: fadeIn 0.5s ease-out; }
.animate-float { animation: float 6s ease-in-out infinite; }

/* Shimmer animation for loading skeletons */
@keyframes shimmer {
  0% { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

.skeleton {
  background: linear-gradient(90deg, var(--color-surface-elevated) 0%, var(--color-border) 50%, var(--color-surface-elevated) 100%);
  background-size: 200px 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

/* Slide up animation for staggered entry */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-slide-up {
  animation: slideUp 0.6s ease-out both;
}

/* Staggered grid children */
.grid > *:nth-child(1) { animation-delay: 0ms; }
.grid > *:nth-child(2) { animation-delay: 80ms; }
.grid > *:nth-child(3) { animation-delay: 160ms; }
.grid > *:nth-child(4) { animation-delay: 240ms; }
.grid > *:nth-child(5) { animation-delay: 320ms; }
.grid > *:nth-child(6) { animation-delay: 400ms; }
.grid > *:nth-child(7) { animation-delay: 480ms; }
.grid > *:nth-child(8) { animation-delay: 560ms; }

/* Score ring change animation */
@keyframes scoreChange {
  0%, 100% { filter: none; }
  50% { filter: brightness(1.3); }
}

.score-ring-wrap.score-changed {
  animation: scoreChange 0.6s ease;
}

/* Button press effect */
.btn-primary:active,
.gradient-accent:active {
  transform: scale(0.97) !important;
}