/*
 * BComm.net — Base Styles & Global Utilities
 * ═══════════════════════════════════════════════════════════════════
 * PHASE 1 — READ-ONLY AFTER VALIDATION
 *
 * Imports: tokens.css (must be loaded first)
 * Provides: CSS reset, typography base, RTL/LTR handling,
 *            glassmorphism utilities, layout helpers, scrollbar.
 * ═══════════════════════════════════════════════════════════════════
 */


/* ── CSS Reset ─────────────────────────────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

img,
video,
svg {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

input,
textarea,
select {
  font: inherit;
}


/* ── Body & Typography Base ─────────────────────────────────────────────────── */

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: var(--text-base);
  line-height: var(--lh-normal);
  font-weight: var(--fw-regular);
  /* Default font; JS overrides via html[lang] */
  font-family: var(--font-en);
  padding-top: var(--navbar-height); /* offset for fixed navbar */
}

/* Language-driven font + direction switching */
html[lang="en"] body {
  font-family: var(--font-en);
  direction: ltr;
  text-align: left;
}

html[lang="ar"] body {
  font-family: var(--font-ar);
  direction: rtl;
  text-align: right;
  /* Arabic needs more vertical space — use dedicated AR line-height token */
  line-height: var(--lh-ar, 1.80);
  /* Arabic letterforms connect; letter-spacing breaks those connections */
  letter-spacing: 0;
  /* Improve Arabic numeral rendering */
  font-feature-settings: 'kern' 1;
}

/* Headings in AR: slightly tighter line-height than body prose */
html[lang="ar"] h1,
html[lang="ar"] h2,
html[lang="ar"] h3 {
  line-height: 1.45;
  letter-spacing: 0;
  font-weight: var(--fw-bold);
}

/* Reset letter-spacing on all elements in AR to prevent distortion */
html[lang="ar"] * {
  letter-spacing: 0 !important;
}


/* ── Custom Scrollbar ──────────────────────────────────────────────────────── */

::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--color-blue-dim);
  border-radius: var(--radius-pill);
  transition: background var(--transition-fast);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-blue);
}


/* ── Focus & Accessibility ──────────────────────────────────────────────────── */

:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* Text selection */
::selection {
  background: var(--color-blue-dim);
  color: var(--color-text-primary);
}


/* ── Layout Utilities ──────────────────────────────────────────────────────── */

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

.section {
  padding-block: var(--section-py);
}

.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;
}


/* ── Glassmorphism Utilities ────────────────────────────────────────────────── */

/* Full glass panel (navbar, modals) */
.glass {
  background: var(--color-bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--color-border-subtle);
}

/* Lighter card glass */
.glass-card {
  background: var(--color-bg-card);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-card);
}

/* Blue-tinted glow border */
.glow-blue {
  box-shadow: var(--shadow-blue-sm);
  border-color: var(--color-border-blue);
}

/* Gold-tinted glow border */
.glow-gold {
  box-shadow: var(--shadow-gold-sm);
  border-color: var(--color-border-gold);
}


/* ── RTL Helpers ────────────────────────────────────────────────────────────── */

/* Flip directional icons (arrows, chevrons) in RTL */
[dir="rtl"] .rtl-flip {
  transform: scaleX(-1);
}

/* Margin/padding logical shorthand helpers */
.ms-auto { margin-inline-start: auto; }
.me-auto { margin-inline-end: auto; }


/* ── Animation Keyframes ────────────────────────────────────────────────────── */

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

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

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 var(--color-blue-glow); }
  70%  { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

/* Utility animation classes */
.animate-fade-in-down { animation: fadeInDown var(--duration-slow) var(--ease-out) both; }
.animate-fade-in-up   { animation: fadeInUp   var(--duration-slow) var(--ease-out) both; }
.animate-fade-in      { animation: fadeIn     var(--duration-normal) var(--ease-smooth) both; }
.animate-scale-in     { animation: scaleIn    var(--duration-normal) var(--ease-bounce) both; }