/* ============================================================
   PlannerDZ V4.0 — Light Design System
   ============================================================ */

:root {
  --c-bg: #FAFAFA;
  --c-bg-raised: #FFFFFF;
  --c-surface: #FFFFFF;
  --c-surface-hover: #F3F4F6;

  --c-glass: rgba(255,255,255,0.85);
  --c-glass-border: rgba(0,0,0,0.07);
  --c-glass-hover: rgba(0,0,0,0.03);

  --c-primary: #2ECC71;
  --c-primary-hover: #27AE60;
  --c-primary-dim: rgba(46,204,113,0.1);
  --c-primary-glow: rgba(46,204,113,0.2);

  --c-blue: #4A9EFF;
  --c-blue-dim: rgba(74,158,255,0.1);

  --c-gold: #F5A623;
  --c-gold-dim: rgba(245,166,35,0.1);

  --c-error: #E74C3C;
  --c-error-dim: rgba(231,76,60,0.08);
  --c-danger: #E74C3C;
  --c-warning: #F39C12;
  --c-success: #2ECC71;

  --c-text: #1A1A2E;
  --c-text-2: #6B7280;
  --c-text-secondary: #6B7280;
  --c-text-muted: #9CA3AF;
  --c-text-inverse: #FFFFFF;

  --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px;
  --s-5: 20px; --s-6: 24px; --s-8: 32px; --s-10: 40px;
  --s-12: 48px; --s-16: 64px; --s-20: 80px; --s-24: 96px;

  --font: 'IBM Plex Sans Arabic', system-ui, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 2rem;
  --fs-4xl: 2.5rem;
  --fs-5xl: 3.5rem;
  --lh-tight: 1.2;
  --lh-normal: 1.6;

  --r-sm: 10px; --r-md: 14px; --r-lg: 20px; --r-xl: 28px; --r-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-glow: 0 4px 20px var(--c-primary-glow);

  --t: 0.2s ease;
  --t-slow: 0.4s ease;
  --t-spring: 0.5s cubic-bezier(0.34,1.56,0.64,1);
}

/* Reset */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  overscroll-behavior-x: none;
}
body {
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overscroll-behavior-x: none;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
ul,ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; touch-action: manipulation; }
input,select,textarea { font: inherit; color: inherit; touch-action: manipulation; }

.container { width: 100%; max-width: 1200px; margin-inline: auto; padding-inline: var(--s-6); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  padding: var(--s-3) var(--s-6);
  border-radius: var(--r-full);
  font-weight: 600; font-size: var(--fs-sm);
  transition: all 0.25s cubic-bezier(0.34,1.56,0.64,1);
  white-space: nowrap; border: none; cursor: pointer;
  letter-spacing: 0.01em;
}
.btn--primary { background: var(--c-primary); color: #fff; box-shadow: 0 2px 12px var(--c-primary-glow); }
.btn--primary:hover { background: var(--c-primary-hover); box-shadow: var(--shadow-glow); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--c-text); border: 1.5px solid var(--c-glass-border); }
.btn--ghost:hover { background: var(--c-surface-hover); }
.btn--secondary { background: var(--c-blue-dim); color: var(--c-blue); }
.btn--danger { background: var(--c-error-dim); color: var(--c-error); }
.btn--danger:hover { background: rgba(231,76,60,0.15); }
.btn--whatsapp { background: #25D366; color: #fff; }
.btn--whatsapp:hover { background: #1DA851; }
.btn--lg { padding: var(--s-4) var(--s-8); font-size: var(--fs-base); }
.btn--sm { padding: var(--s-2) var(--s-4); font-size: var(--fs-xs); }
.btn--full { width: 100%; }

/* Glass Card */
.glass {
  background: var(--c-bg-raised);
  border: 0.5px solid rgba(0,0,0,0.04);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
}

/* Section */
.section { padding-block: var(--s-24); }
.section__title { font-size: var(--fs-3xl); font-weight: 700; line-height: var(--lh-tight); text-align: center; margin-bottom: var(--s-3); }
.section__subtitle { font-size: var(--fs-lg); color: var(--c-text-secondary); text-align: center; margin-bottom: var(--s-16); max-width: 600px; margin-inline: auto; }

/* ============================================================ LANDING ============================================================ */

/* Navbar */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(248,249,251,0.85);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t), box-shadow var(--t);
}
.navbar.scrolled { border-bottom-color: var(--c-glass-border); box-shadow: var(--shadow-sm); }
.navbar__inner { display: flex; align-items: center; justify-content: space-between; padding-block: var(--s-3); }
.navbar__logo img { height: 36px; width: auto; }
.navbar__links { display: flex; align-items: center; gap: var(--s-6); }
.navbar__links a { font-size: var(--fs-sm); font-weight: 600; color: var(--c-text-secondary); transition: color var(--t); }
.navbar__links a:hover { color: var(--c-text); }
.navbar__toggle { display: none; flex-direction: column; gap: 5px; width: 24px; padding: 2px 0; }
.navbar__toggle span { display: block; height: 2px; width: 100%; background: var(--c-text); border-radius: 2px; transition: all var(--t); }
.navbar__toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.navbar__toggle.open span:nth-child(2) { opacity: 0; }
.navbar__toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Hero */
.hero {
  padding-top: calc(72px + var(--s-20)); padding-bottom: var(--s-20);
  text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(180deg, #ECFDF5 0%, var(--c-bg) 100%);
}
.hero__content { position: relative; z-index: 1; }
.hero__badge {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: var(--s-2) var(--s-4); background: var(--c-primary-dim); color: var(--c-primary-hover);
  border-radius: var(--r-full); font-size: var(--fs-sm); font-weight: 600; margin-bottom: var(--s-6);
}
.hero__title { font-size: var(--fs-5xl); font-weight: 700; line-height: var(--lh-tight); max-width: 800px; margin-inline: auto; margin-bottom: var(--s-6); }
.hero__title .highlight { color: var(--c-primary); }
.hero__desc { font-size: var(--fs-xl); color: var(--c-text-secondary); max-width: 560px; margin-inline: auto; margin-bottom: var(--s-10); }
.hero__actions { display: flex; justify-content: center; gap: var(--s-4); flex-wrap: wrap; }
.hero__visual { margin-top: var(--s-12); position: relative; z-index: 1; }
.hero__mockup { max-width: 600px; margin-inline: auto; border-radius: var(--r-xl); box-shadow: var(--shadow-lg); border: 1px solid var(--c-glass-border); }

/* How It Works */
.how-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); max-width: 900px; margin-inline: auto; }
.how-steps__item { text-align: center; padding: var(--s-6); }
.how-steps__num { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; background: var(--c-primary-dim); color: var(--c-primary); border-radius: var(--r-full); font-size: var(--fs-xl); font-weight: 700; margin-bottom: var(--s-4); }
.how-steps__item h3 { font-size: var(--fs-lg); font-weight: 700; margin-bottom: var(--s-2); }
.how-steps__item p { font-size: var(--fs-sm); color: var(--c-text-secondary); }

/* Feature Rows */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-12); align-items: center; padding-block: var(--s-12); }
.feature-row--reverse .feature-row__visual { order: -1; }
.feature-row__visual img { border-radius: var(--r-xl); box-shadow: var(--shadow-md); border: 1px solid var(--c-glass-border); }
.feature-row__text h3 { font-size: var(--fs-2xl); font-weight: 700; margin-bottom: var(--s-3); }
.feature-row__text p { font-size: var(--fs-base); color: var(--c-text-secondary); line-height: var(--lh-normal); }

/* Budget Explainer */
.budget-pills { display: flex; justify-content: center; gap: var(--s-3); margin-bottom: var(--s-10); flex-wrap: wrap; }
.budget-pill { padding: var(--s-3) var(--s-5); border-radius: var(--r-full); font-weight: 700; font-size: var(--fs-sm); background: var(--c-surface-hover); }
.budget-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); max-width: 900px; margin-inline: auto; }
.budget-card { padding: var(--s-6); text-align: center; }
.budget-card h4 { font-size: var(--fs-lg); font-weight: 700; margin-top: var(--s-3); margin-bottom: var(--s-2); }
.budget-card p { font-size: var(--fs-sm); color: var(--c-text-secondary); }

/* Reviews */
.reviews-track { display: flex; gap: var(--s-4); overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; padding-bottom: var(--s-4); scrollbar-width: none; }
.reviews-track::-webkit-scrollbar { display: none; }
.review-card { min-width: 280px; max-width: 320px; padding: var(--s-5); scroll-snap-align: start; flex-shrink: 0; }
.review-card__stars { font-size: var(--fs-base); letter-spacing: 2px; margin-bottom: var(--s-3); }
.review-card p { font-size: var(--fs-sm); color: var(--c-text-secondary); line-height: var(--lh-normal); margin-bottom: var(--s-3); }
.review-card__author { font-size: var(--fs-xs); color: var(--c-text-muted); font-weight: 600; }

/* CTA */
.cta-section { text-align: center; padding-block: var(--s-24); background: linear-gradient(180deg, var(--c-bg) 0%, #ECFDF5 100%); }

/* Footer */
.footer { border-top: 1px solid var(--c-glass-border); padding-block: var(--s-12); color: var(--c-text-secondary); font-size: var(--fs-sm); }
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--s-10); align-items: start; }
.footer__col h4 { font-weight: 700; color: var(--c-text); margin-bottom: var(--s-3); font-size: var(--fs-sm); }
.footer__col a { display: block; margin-bottom: var(--s-2); transition: color var(--t); }
.footer__col a:hover { color: var(--c-primary); }

/* WhatsApp Float */
.whatsapp-float { position: fixed; bottom: var(--s-6); right: var(--s-6); width: 56px; height: 56px; background: #25D366; border-radius: var(--r-full); display: flex; align-items: center; justify-content: center; z-index: 90; box-shadow: 0 4px 12px rgba(37,211,102,0.3); transition: transform var(--t); }
[dir="rtl"] .whatsapp-float { right: auto; left: var(--s-6); }
.whatsapp-float:hover { transform: scale(1.1); }
.whatsapp-float svg { width: 28px; height: 28px; fill: #fff; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================================================ RESPONSIVE ============================================================ */
@media (max-width: 1024px) {
  .feature-row { grid-template-columns: 1fr; gap: var(--s-6); }
  .feature-row--reverse .feature-row__visual { order: 0; }
}

@media (max-width: 768px) {
  :root { --fs-5xl: 2.25rem; --fs-4xl: 1.75rem; --fs-3xl: 1.5rem; }
  .navbar__links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; padding: var(--s-5); background: var(--c-bg-raised);
    border-bottom: 1px solid var(--c-glass-border); box-shadow: var(--shadow-md); gap: var(--s-3);
  }
  .navbar__links.open { display: flex; }
  .navbar__toggle { display: flex; }
  .hero { padding-top: calc(64px + var(--s-10)); padding-bottom: var(--s-10); }
  .how-steps { grid-template-columns: 1fr; }
  .budget-cards { grid-template-columns: 1fr; }
  .section { padding-block: var(--s-16); }
  .footer__inner { grid-template-columns: 1fr; gap: var(--s-6); }
}

@media (max-width: 480px) {
  :root { --fs-5xl: 1.875rem; --fs-3xl: 1.25rem; }
  .container { padding-inline: var(--s-4); }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .review-card { min-width: 250px; }
}