/* ==========================================================================
   Fahd Academy - Main Stylesheet
   المدرب فهد رفاعي | fahdacademy.org
   Build: 2026-05 | Static HTML/CSS/JS rewrite
   ========================================================================== */

/* ---------- 1. Design Tokens ---------- */
:root {
  /* Brand palette - deep purple inspired by Udemy but distinguished */
  --c-primary: #6D28D9;          /* main purple */
  --c-primary-dark: #4C1D95;     /* deep purple for headings/header */
  --c-primary-darker: #3B0764;   /* almost-black purple */
  --c-primary-light: #A78BFA;    /* light accent */
  --c-primary-tint: #F5F3FF;     /* very light tint for hover/bg */
  --c-accent: #F59E0B;           /* yellow CTA */
  --c-accent-dark: #D97706;
  --c-accent-tint: #FEF3C7;

  /* Neutrals */
  --c-text: #111827;
  --c-text-muted: #4B5563;
  --c-text-soft: #6B7280;
  --c-border: #E5E7EB;
  --c-border-soft: #F3F4F6;
  --c-bg: #FFFFFF;
  --c-bg-soft: #F9FAFB;
  --c-bg-section: #FAFAFB;

  /* Semantic */
  --c-success: #10B981;
  --c-star: #FBBF24;

  /* Layout */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(17,24,39,.04), 0 1px 3px rgba(17,24,39,.06);
  --shadow: 0 4px 6px -1px rgba(17,24,39,.06), 0 2px 4px -2px rgba(17,24,39,.04);
  --shadow-lg: 0 10px 30px -8px rgba(76,29,149,.18), 0 6px 12px -4px rgba(17,24,39,.06);
  --shadow-purple: 0 12px 28px -10px rgba(109,40,217,.35);

  --container: 1200px;
  --header-h: 72px;

  /* Typography */
  --ff-base: 'Cairo', 'IBM Plex Sans Arabic', 'Tajawal', system-ui, -apple-system, sans-serif;
  --ff-mono: 'JetBrains Mono', 'Consolas', monospace;

  /* Motion */
  --ease: cubic-bezier(.2,.7,.2,1);
}

/* ---------- 2. Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  font-family: var(--ff-base);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  direction: rtl;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, picture, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ---------- 3. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  border: 1.5px solid transparent;
  transition: all .25s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--c-primary);
  color: #fff;
  box-shadow: var(--shadow-purple);
}
.btn-primary:hover {
  background: var(--c-primary-dark);
  transform: translateY(-2px);
}
.btn-accent {
  background: var(--c-accent);
  color: #1F2937;
}
.btn-accent:hover {
  background: var(--c-accent-dark);
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--c-primary);
  border-color: var(--c-primary);
}
.btn-outline:hover {
  background: var(--c-primary-tint);
}
.btn-ghost {
  background: transparent;
  color: var(--c-text);
  padding: 8px 14px;
}
.btn-ghost:hover { color: var(--c-primary); }

/* ---------- 4. Header / Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-border-soft);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  font-size: 19px;
  color: var(--c-primary-dark);
}
.brand-mark {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 900;
  font-size: 18px;
  box-shadow: var(--shadow-purple);
  letter-spacing: -.5px;
}
.brand-text { line-height: 1.2; }
.brand-text small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--c-text-soft);
  letter-spacing: .3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 0; margin: 0;
}
.nav-links a {
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text-muted);
  border-radius: var(--radius-sm);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--c-primary); background: var(--c-primary-tint); }

.nav-cta { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  color: var(--c-text);
}
.nav-toggle svg { width: 22px; height: 22px; }

/* ---------- 5. Hero ---------- */
.hero {
  position: relative;
  padding: clamp(48px, 8vw, 96px) 0 clamp(48px, 6vw, 80px);
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 60% at 80% 0%, rgba(167,139,250,.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 0% 100%, rgba(245,158,11,.08) 0%, transparent 60%),
    linear-gradient(180deg, #fff 0%, var(--c-bg-soft) 100%);
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(109,40,217,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109,40,217,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
          mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 56px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--c-primary-tint);
  color: var(--c-primary-dark);
  border: 1px solid rgba(109,40,217,.15);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 20px;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-primary);
  box-shadow: 0 0 0 4px rgba(109,40,217,.15);
}
.hero h1 {
  font-size: clamp(30px, 4.8vw, 52px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -.5px;
  margin: 0 0 18px;
  color: var(--c-text);
}
.hero h1 .highlight {
  background: linear-gradient(120deg, var(--c-primary) 0%, var(--c-primary-light) 100%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero p.lead {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--c-text-muted);
  margin: 0 0 28px;
  max-width: 56ch;
  line-height: 1.8;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-stats {
  display: flex;
  gap: 28px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px dashed var(--c-border);
}
.hero-stat .num {
  font-size: 28px;
  font-weight: 900;
  color: var(--c-primary-dark);
  line-height: 1;
}
.hero-stat .lbl {
  display: block;
  font-size: 13px;
  color: var(--c-text-soft);
  margin-top: 6px;
}

.hero-visual {
  position: relative;
  aspect-ratio: 5 / 6;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--c-primary-dark), var(--c-primary));
  box-shadow: var(--shadow-lg);
  transform: rotate(-1deg);
}
.hero-visual::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url('../images/header-bg.webp');
  background-size: cover;
  background-position: center;
  opacity: .25;
  mix-blend-mode: luminosity;
}
.hero-visual::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(167,139,250,.5) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(245,158,11,.25) 0%, transparent 50%);
}
.hero-visual-card {
  position: absolute;
  z-index: 2;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 20px 40px -16px rgba(0,0,0,.3);
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-visual-card .ico {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.hero-visual-card .ico svg { width: 24px; height: 24px; }
.hero-visual-card-1 {
  top: 36px; right: 24px;
  transform: rotate(2deg);
}
.hero-visual-card-1 .ico { background: var(--c-primary-tint); color: var(--c-primary); }
.hero-visual-card-2 {
  bottom: 60px; left: 24px;
  transform: rotate(-3deg);
}
.hero-visual-card-2 .ico { background: var(--c-accent-tint); color: var(--c-accent-dark); }
.hero-visual-card .ttl { font-weight: 800; font-size: 14px; line-height: 1.2; margin-bottom: 4px; }
.hero-visual-card .sub { font-size: 12px; color: var(--c-text-soft); line-height: 1.3; }

/* ---------- 6. Section base ---------- */
.section {
  padding: clamp(60px, 8vw, 96px) 0;
}
.section-soft { background: var(--c-bg-soft); }
.section-dark {
  background: linear-gradient(180deg, var(--c-primary-darker) 0%, var(--c-primary-dark) 100%);
  color: #fff;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  color: var(--c-primary);
  letter-spacing: .8px;
  margin-bottom: 12px;
}
.section-dark .section-eyebrow { color: var(--c-primary-light); }
.section h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  line-height: 1.25;
  font-weight: 900;
  margin: 0 0 14px;
  letter-spacing: -.5px;
}
.section p.section-sub {
  font-size: 17px;
  color: var(--c-text-muted);
  margin: 0;
  line-height: 1.8;
}
.section-dark p.section-sub { color: rgba(255,255,255,.8); }

/* ---------- 7. Courses ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 9px 18px;
  border: 1.5px solid var(--c-border);
  background: #fff;
  color: var(--c-text-muted);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  transition: all .2s var(--ease);
}
.filter-btn:hover {
  border-color: var(--c-primary-light);
  color: var(--c-primary);
}
.filter-btn.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
  box-shadow: var(--shadow-purple);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.course-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-primary-light);
}
.course-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--c-primary-tint);
}
.course-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.course-card:hover .course-thumb img { transform: scale(1.05); }
.course-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 5px 12px;
  background: rgba(255,255,255,.95);
  color: var(--c-primary-dark);
  font-size: 12px;
  font-weight: 800;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}
.course-body {
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.course-card h3 {
  font-size: 18px;
  line-height: 1.4;
  font-weight: 800;
  margin: 0 0 10px;
  color: var(--c-text);
  min-height: 50px;
}
.course-card .desc {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin: 0 0 16px;
  flex: 1;
}
.course-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-top: 1px dashed var(--c-border);
  margin-bottom: 14px;
  font-size: 13px;
}
.course-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--c-text);
}
.course-rating svg { width: 16px; height: 16px; fill: var(--c-star); }
.course-platform {
  color: var(--c-text-soft);
  font-weight: 600;
}
.course-card .btn { width: 100%; justify-content: center; }

/* ---------- 8. Why Us ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature {
  background: #fff;
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  transition: transform .3s var(--ease), border-color .3s;
  position: relative;
  overflow: hidden;
}
.feature::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 80px; height: 80px;
  background: radial-gradient(circle at top right, var(--c-primary-tint) 0%, transparent 70%);
  opacity: 0;
  transition: opacity .3s;
}
.feature:hover { transform: translateY(-3px); border-color: var(--c-primary-light); }
.feature:hover::before { opacity: 1; }
.feature-ico {
  width: 52px; height: 52px;
  background: var(--c-primary-tint);
  color: var(--c-primary);
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  position: relative;
}
.feature-ico svg { width: 26px; height: 26px; }
.feature h3 {
  font-size: 18px;
  font-weight: 800;
  margin: 0 0 8px;
}
.feature p {
  font-size: 14.5px;
  color: var(--c-text-muted);
  line-height: 1.7;
  margin: 0;
}

/* ---------- 9. Instructor ---------- */
.instructor {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
  align-items: center;
  background: #fff;
  padding: clamp(28px, 5vw, 56px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow);
}
.instructor-photo {
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--c-primary-dark), var(--c-primary));
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.instructor-photo::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url('../images/header-bg.webp');
  background-size: cover; background-position: center;
  opacity: .15;
  mix-blend-mode: overlay;
}
.instructor-monogram {
  font-size: clamp(64px, 12vw, 110px);
  font-weight: 900;
  color: #fff;
  letter-spacing: -3px;
  position: relative;
  text-shadow: 0 4px 20px rgba(0,0,0,.3);
}
.instructor-content h3 {
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 900;
  margin: 0 0 6px;
  color: var(--c-text);
}
.instructor-title {
  color: var(--c-primary);
  font-weight: 700;
  margin: 0 0 18px;
  font-size: 16px;
}
.instructor-content p.bio {
  font-size: 16px;
  color: var(--c-text-muted);
  line-height: 1.85;
  margin: 0 0 22px;
}
.instructor-points {
  list-style: none;
  padding: 0; margin: 0 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
}
.instructor-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--c-text);
  font-weight: 600;
}
.instructor-points li::before {
  content: '';
  width: 18px; height: 18px;
  background: var(--c-primary-tint);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236D28D9' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 11px;
}

/* ---------- 10. Contact / Social ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  max-width: 880px;
  margin: 0 auto;
}
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 28px 18px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  transition: all .25s var(--ease);
  color: #fff;
}
.contact-card:hover {
  background: rgba(255,255,255,.12);
  transform: translateY(-3px);
  border-color: var(--c-primary-light);
}
.contact-ico {
  width: 52px; height: 52px;
  background: rgba(255,255,255,.1);
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  color: var(--c-primary-light);
}
.contact-ico svg { width: 26px; height: 26px; }
.contact-card .label {
  font-weight: 800;
  font-size: 15px;
  margin-bottom: 2px;
}
.contact-card .handle {
  font-size: 13px;
  color: rgba(255,255,255,.7);
  direction: ltr;
}

/* ---------- 11. Footer ---------- */
.site-footer {
  background: #0F0820;
  color: rgba(255,255,255,.7);
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .brand { color: #fff; margin-bottom: 14px; }
.footer-brand .brand-text small { color: rgba(255,255,255,.6); }
.footer-brand p {
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 40ch;
  margin: 0;
}
.footer h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  margin: 0 0 16px;
  letter-spacing: .3px;
}
.footer-links {
  list-style: none;
  padding: 0; margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,.7);
  transition: color .2s;
}
.footer-links a:hover { color: var(--c-primary-light); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}
.footer-bottom .heart { color: var(--c-accent); }

/* ---------- 12. Animations ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ---------- 13. Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { max-width: 420px; margin-inline: auto; }
  .instructor { grid-template-columns: 1fr; gap: 28px; }
  .instructor-photo { max-width: 280px; margin-inline: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-cta .btn-ghost { display: none; }
  .nav-cta .btn-primary { display: none; }

  .nav-links.open {
    display: flex;
    position: absolute;
    top: var(--header-h);
    inset-inline: 0;
    flex-direction: column;
    background: #fff;
    padding: 12px 16px 16px;
    border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow);
    gap: 4px;
  }
  .nav-links.open a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  .brand { font-size: 17px; gap: 10px; }
  .brand-mark { width: 36px; height: 36px; font-size: 16px; }
  .brand-text small { font-size: 10.5px; }

  .hero h1 { font-size: clamp(26px, 7vw, 36px); }
  .hero-stats { gap: 18px; flex-wrap: wrap; }
  .hero-stat .num { font-size: 22px; }
  .hero-visual-card { padding: 12px; }
  .hero-visual-card .ttl { font-size: 13px; }
  .hero-visual-card .sub { font-size: 11px; }

  .instructor-points { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding-inline: 18px; }
  .courses-grid { grid-template-columns: 1fr; }
  .filters { gap: 6px; }
  .filter-btn { padding: 7px 14px; font-size: 13px; }
  .brand-text small { display: none; }
}

/* ---------- 14. Utility ---------- */
.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;
}