/* ============================
   1. CSS Custom Properties
   ============================ */
:root {
  --color-primary: #0D9488;
  --color-primary-dark: #0F766E;
  --color-secondary: #0F172A;
  --color-accent: #F59E0B;
  --color-accent-dark: #D97706;
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #0F172A;
  --color-text-secondary: #64748B;
  --color-success: #22C55E;
  --color-error: #EF4444;

  --font-en: 'Inter', system-ui, -apple-system, sans-serif;
  --font-ar: 'Cairo', system-ui, sans-serif;
  --font-body: var(--font-en);

  --nav-height: 72px;
  --container-max: 1120px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

/* ============================
   2. Reset & Base
   ============================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

input, select {
  font: inherit;
  border: none;
  outline: none;
}

/* ============================
   3. Typography
   ============================ */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: 1.125rem; }

/* ============================
   4. Layout
   ============================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.section-title {
  text-align: center;
  margin-block-end: 48px;
}

/* ============================
   5. Navigation
   ============================ */
.navbar {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.15);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-toggle {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--transition);
}

.lang-toggle:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

/* ============================
   6. Buttons
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 1rem;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-secondary);
  font-weight: 700;
}

.btn-accent:hover {
  background: var(--color-accent-dark);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.875rem;
}

/* ============================
   7. Hero Section
   ============================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-secondary) 0%, #1E293B 100%);
  padding-block-start: var(--nav-height);
  padding-block: 80px;
  text-align: center;
}

.hero-content {
  max-width: 680px;
  margin-inline: auto;
}

.badge {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-secondary);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 999px;
  margin-block-end: 24px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero-title {
  color: #fff;
  margin-block-end: 20px;
}

.hero-subtitle {
  color: rgba(255, 255, 255, 0.75);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  margin-block-end: 40px;
  max-width: 540px;
  margin-inline: auto;
}

.hero-trust {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8125rem;
  margin-block-start: 16px;
}

/* ============================
   8. Waitlist Form
   ============================ */
.waitlist-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.phone-input-group {
  display: flex;
  background: #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color var(--transition);
}

.phone-input-group:focus-within {
  border-color: var(--color-primary);
}

.country-code {
  background: #F1F5F9;
  padding: 12px;
  font-size: 0.9375rem;
  color: var(--color-text);
  cursor: pointer;
  border-inline-end: 1px solid #E2E8F0;
  min-width: 80px;
}

.phone-input {
  padding: 12px 16px;
  font-size: 1rem;
  min-width: 200px;
  color: var(--color-text);
  background: #fff;
}

.phone-input::placeholder {
  color: var(--color-text-secondary);
}

.form-success {
  color: var(--color-success);
  font-weight: 600;
  font-size: 1rem;
  padding: 12px;
}

.form-error {
  color: var(--color-error);
  font-size: 0.875rem;
  margin-block-start: 8px;
}

.hidden {
  display: none;
}

/* ============================
   9. Problem Section
   ============================ */
.problem {
  padding-block: 96px;
  background: var(--color-surface);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-block-end: 40px;
}

.stat-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius);
  background: var(--color-bg);
  border: 1px solid #E2E8F0;
}

.stat-number {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-block-end: 8px;
}

.stat-red {
  color: var(--color-error);
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.problem-closer {
  text-align: center;
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin-inline: auto;
}

/* ============================
   10. How It Works Section
   ============================ */
.how-it-works {
  padding-block: 96px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 40px;
  counter-reset: step;
}

.step {
  text-align: center;
  position: relative;
  counter-increment: step;
}

.step-icon {
  width: 80px;
  height: 80px;
  background: rgba(13, 148, 136, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-block-end: 20px;
  position: relative;
}

.step-icon::before {
  content: counter(step);
  position: absolute;
  top: -4px;
  inset-inline-end: -4px;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-title {
  margin-block-end: 8px;
}

.step-desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  max-width: 300px;
  margin-inline: auto;
}

/* ============================
   11. Features Section
   ============================ */
.features {
  padding-block: 96px;
  background: var(--color-surface);
}

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

.feature-card {
  padding: 32px;
  border-radius: var(--radius);
  background: var(--color-bg);
  border: 1px solid #E2E8F0;
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(13, 148, 136, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-block-end: 16px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-card h3 {
  margin-block-end: 8px;
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ============================
   12. Final CTA Section
   ============================ */
.waitlist-cta {
  padding-block: 96px;
  background: linear-gradient(135deg, var(--color-secondary) 0%, #1E293B 100%);
  text-align: center;
}

.waitlist-cta-content {
  max-width: 600px;
  margin-inline: auto;
}

.waitlist-cta-title {
  color: #fff;
  margin-block-end: 16px;
}

.waitlist-cta-subtitle {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.125rem;
  margin-block-end: 40px;
}

.waitlist-cta-trust {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.8125rem;
  margin-block-start: 16px;
}

/* ============================
   14. Footer
   ============================ */
.footer {
  background: var(--color-secondary);
  padding-block: 48px;
  border-block-start: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
  margin-block-start: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #fff;
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

.footer-social a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.8125rem;
}

.footer-bottom p + p {
  margin-block-start: 4px;
}

/* ============================
   15. RTL Overrides
   ============================ */
[dir="rtl"] {
  --font-body: var(--font-ar);
}

[dir="rtl"] body {
  line-height: 1.8;
  letter-spacing: 0;
}

[dir="rtl"] .badge {
  letter-spacing: 0;
  text-transform: none;
}

/* ============================
   16. Responsive
   ============================ */
@media (max-width: 768px) {
  .hero {
    padding-block: 120px 60px;
  }

  .waitlist-form {
    flex-direction: column;
    align-items: stretch;
  }

  .phone-input-group {
    width: 100%;
  }

  .phone-input {
    min-width: 0;
    flex: 1;
  }

  .btn-accent {
    width: 100%;
  }

  .stats-grid,
  .steps-grid,
  .features-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .nav-actions .btn-sm {
    display: none;
  }

  .section-title {
    margin-block-end: 32px;
  }

  .problem,
  .how-it-works,
  .features,
  .waitlist-cta {
    padding-block: 64px;
  }
}

/* ============================
   17. Scroll Animations
   ============================ */
.anim-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.anim-section.visible {
  opacity: 1;
  transform: translateY(0);
}