/* ==========================================================================
   Base Styles - Reset, Typography, RTL/LTR Support
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

html.lenis,
html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

body {
  font-family: var(--font-english-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  transition: background-color var(--duration-slow) var(--ease-out),
              color var(--duration-slow) var(--ease-out);
  min-height: 100vh;
  position: relative;
}

/* Arabic body */
body[dir="rtl"] {
  font-family: var(--font-arabic-body);
}

/* Noise texture overlay - subtle grain for depth */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-overlay);
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-english-display);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}

body[dir="rtl"] h1,
body[dir="rtl"] h2,
body[dir="rtl"] h3,
body[dir="rtl"] h4,
body[dir="rtl"] h5,
body[dir="rtl"] h6 {
  font-family: var(--font-arabic-display);
  font-weight: var(--weight-bold);
  letter-spacing: 0;
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
}

body[dir="rtl"] p {
  line-height: 1.9;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-colors);
}

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ========================================
   SELECTION
   ======================================== */
::selection {
  background-color: var(--brand-purple);
  color: white;
}

::-moz-selection {
  background-color: var(--brand-purple);
  color: white;
}

/* ========================================
   SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--brand-gradient);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-gradient-reverse);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.container {
  width: 100%;
  max-width: var(--container-2xl);
  margin-inline: auto;
  padding-inline: var(--section-px);
}

.container-narrow {
  max-width: var(--container-lg);
}

.gradient-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.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;
}

/* Glass effect */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
}

/* Section base */
section {
  position: relative;
  padding-block: var(--section-py);
  overflow: hidden;
}

/* ========================================
   FOCUS STYLES
   ======================================== */
:focus-visible {
  outline: 2px solid var(--brand-purple);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* Remove focus for mouse users */
:focus:not(:focus-visible) {
  outline: none;
}

/* ========================================
   LOADING STATE
   ======================================== */
.no-scroll {
  overflow: hidden;
  height: 100vh;
}