/* ============================================
   ZERO2BAND5 — Design System
   Brand: من الصفر إلى باند ٥
   Colors: Teal + Orange energy, light & clean
   ============================================ */

:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #ccfbf1;
  --accent: #f97316;
  --accent-light: #fff7ed;
  --accent-dark: #ea580c;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --info: #3b82f6;
  --info-bg: #eff6ff;
  --purple: #8b5cf6;
  --purple-bg: #f5f3ff;
  --gold: #d97706;

  --bg: #f8fafb;
  --bg-alt: #f0f4f5;
  --card: #ffffff;
  --tx: #1a2332;
  --tx2: #64748b;
  --tx3: #94a3b8;
  --bdr: #e2e8f0;
  --bdr2: #cbd5e1;

  --font-ar: 'Cairo', 'Tajawal', sans-serif;
  --font-en: 'Inter', 'Segoe UI', sans-serif;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow: 0 4px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12);
  --shadow-xl: 0 20px 50px rgba(0,0,0,.15);

  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-en);
  background: var(--bg);
  color: var(--tx);
  min-height: 100vh;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body[dir="rtl"] { font-family: var(--font-ar); }

a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }

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

/* ============================================
   LAYOUT
   ============================================ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-sm { max-width: 800px; margin: 0 auto; padding: 0 20px; }
.container-xs { max-width: 600px; margin: 0 auto; padding: 0 20px; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 12px; }
.gap-3 { gap: 16px; }
.gap-4 { gap: 24px; }
.gap-5 { gap: 32px; }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.text-center { text-align: center; }
.text-right { text-align: right; }

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  background: var(--card);
  border-bottom: 1px solid var(--bdr);
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.95);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ar);
  font-weight: 800;
  font-size: 18px;
  color: var(--primary);
}
.nav-brand .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  color: var(--tx2);
  transition: all .2s;
  font-family: var(--font-ar);
}
.nav-links a:hover { color: var(--primary); background: var(--primary-light); }
.nav-links a.active { color: var(--primary); background: var(--primary-light); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--primary);
  color: #fff !important;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 14px;
  transition: all .2s;
  border: none;
  cursor: pointer;
  font-family: var(--font-ar);
}
.nav-cta:hover { background: var(--primary-dark); color: #fff !important; transform: translateY(-1px); }

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--tx);
  cursor: pointer;
  padding: 4px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .25s;
  font-family: var(--font-ar);
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }

.btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }

.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

.btn-ghost { background: transparent; color: var(--tx2); border-color: var(--bdr); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.btn-lg { padding: 16px 36px; font-size: 17px; border-radius: var(--radius-lg); }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-block { width: 100%; }

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all .3s;
}
.card:hover { box-shadow: var(--shadow); border-color: var(--bdr2); }
.card-elevated { box-shadow: var(--shadow-sm); }
.card-elevated:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }

/* ============================================
   BADGES & TAGS
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
}
.badge-free { background: var(--success-bg); color: var(--success); }
.badge-premium { background: var(--warning-bg); color: var(--gold); }
.badge-new { background: var(--info-bg); color: var(--info); }
.badge-hot { background: var(--danger-bg); color: var(--danger); }
.badge-level { background: var(--purple-bg); color: var(--purple); }

.tag {
  display: inline-flex;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--bdr);
  color: var(--tx2);
  background: var(--bg);
}
.tag.active { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

/* ============================================
   FORM ELEMENTS
   ============================================ */
.input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--bdr);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: var(--font-ar);
  color: var(--tx);
  background: var(--card);
  transition: border-color .2s;
  outline: none;
}
.input:focus { border-color: var(--primary); }
.input::placeholder { color: var(--tx3); }

.select {
  appearance: none;
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--bdr);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: var(--font-ar);
  color: var(--tx);
  background: var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat left 16px center;
  cursor: pointer;
  outline: none;
}
.select:focus { border-color: var(--primary); }

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress-bar {
  height: 8px;
  background: var(--bdr);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width .5s ease;
  background: linear-gradient(90deg, var(--primary), var(--success));
}

/* ============================================
   SECTION SPACING
   ============================================ */
.section { padding: 80px 0; }
.section-sm { padding: 40px 0; }
.section-title {
  font-size: 32px;
  font-weight: 800;
  font-family: var(--font-ar);
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-desc {
  font-size: 16px;
  color: var(--tx2);
  max-width: 600px;
  line-height: 1.8;
  font-family: var(--font-ar);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--tx);
  color: #e2e8f0;
  padding: 50px 0 30px;
  margin-top: 80px;
}
.footer a { color: #94a3b8; }
.footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand {
  font-family: var(--font-ar);
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.footer-desc { font-size: 14px; color: #94a3b8; line-height: 1.8; }
.footer-title {
  font-family: var(--font-ar);
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  font-size: 15px;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; }
.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #64748b;
}

/* ============================================
   TOOL PAGE LAYOUT
   ============================================ */
.tool-header {
  background: var(--card);
  border-bottom: 1px solid var(--bdr);
  padding: 24px 0;
}
.tool-header h1 {
  font-family: var(--font-ar);
  font-size: 26px;
  font-weight: 800;
}
.tool-header .tool-desc {
  color: var(--tx2);
  font-size: 14px;
  margin-top: 4px;
  font-family: var(--font-ar);
}
.tool-body { padding: 32px 0; }

/* XP & GAMIFICATION */
.xp-bar-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius);
}
.xp-icon { font-size: 20px; }
.xp-count { font-size: 14px; font-weight: 800; color: var(--purple); }
.streak-count { font-size: 14px; font-weight: 800; color: var(--accent); }

/* ============================================
   LOCKED / PREMIUM OVERLAY
   ============================================ */
.locked-overlay {
  position: relative;
  overflow: hidden;
}
.locked-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 20%, rgba(248,250,251,.95) 60%);
  pointer-events: none;
}
.lock-cta {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  text-align: center;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}
.animate-in { animation: fadeInUp .5s ease forwards; }
.animate-pulse { animation: pulse 2s infinite; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 50px 0; }
  .section-title { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
  .hero-title { font-size: 32px !important; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .card { padding: 20px; }
  .btn-lg { padding: 14px 28px; font-size: 15px; }
  .hero-title { font-size: 26px !important; }
}