/* ========================================
   Project Landing Pages - Design System
   ======================================== */

:root {
  --project-primary: #36ADA3;
  --project-secondary: #2F578A;
  --project-accent: #4FD1C5;

  --bg: #0B0F1F;
  --bg-alt: #111827;
  --surface: rgba(17, 24, 39, 0.7);
  --surface-hover: rgba(17, 24, 39, 0.9);
  --text: #F8FAFC;
  --text-muted: #94A3B8;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.35);

  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --container-width: 1200px;
  --header-height: 80px;

  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  --bg: #F7F9FC;
  --bg-alt: #FFFFFF;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-hover: rgba(255, 255, 255, 0.95);
  --text: #0F172A;
  --text-muted: #64748B;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.15);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  font-family: 'Inter', 'Cairo', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

html[dir="rtl"] body {
  font-family: 'Cairo', 'Inter', sans-serif;
}

a {
  color: var(--project-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  filter: brightness(1.2);
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--project-primary) 0%, var(--project-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--project-primary) 0%, var(--project-secondary) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  color: white;
}

.btn-secondary {
  background: transparent;
  color: var(--project-primary);
  border: 2px solid var(--project-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

.btn-full {
  width: 100%;
}

/* Header */
.project-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: var(--transition);
}

.project-header.scrolled {
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 1.25rem;
}

.brand:hover {
  color: var(--text);
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.back-link:hover {
  color: var(--project-primary);
}

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

.theme-toggle,
.lang-toggle,
.mobile-menu-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  transition: var(--transition);
}

.theme-toggle:hover,
.lang-toggle:hover,
.mobile-menu-toggle:hover {
  background: var(--surface-hover);
  border-color: var(--project-primary);
  color: var(--project-primary);
}

.lang-toggle {
  width: auto;
  padding: 0 16px;
  gap: 8px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
}

.mobile-menu-toggle {
  display: none;
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--surface);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 24px;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-lg);
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  color: var(--text);
  font-weight: 600;
  font-size: 1.1rem;
  padding: 12px;
  border-radius: var(--radius-sm);
}

.mobile-nav a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--project-primary);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-bg::before,
.hero-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
}

.hero-bg::before {
  width: 500px;
  height: 500px;
  background: var(--project-primary);
  top: -100px;
  inset-inline-start: -100px;
}

.hero-bg::after {
  width: 400px;
  height: 400px;
  background: var(--project-secondary);
  bottom: -100px;
  inset-inline-end: -100px;
}

.hero-banner {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.08;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  text-align: start;
}

.hero-logo {
  width: 110px;
  height: 110px;
  border-radius: 24px;
  margin-bottom: 24px;
  animation: float-logo 4s ease-in-out infinite;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

@keyframes float-logo {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-title {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.platforms {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.platform-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-image img {
  max-height: 500px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Sections */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 50px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--project-primary);
  box-shadow: var(--shadow);
}

.feature-icon {
  font-size: 2.75rem;
  margin-bottom: 18px;
  display: block;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--project-primary);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Screenshots */
.screenshots-section {
  background: linear-gradient(180deg, transparent 0%, rgba(255,255,255,0.02) 50%, transparent 100%);
}

.screenshots-scroll {
  display: flex;
  gap: 2.5rem;
  overflow-x: auto;
  padding: 3rem 5%;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  perspective: 1200px;
}

.screenshots-scroll::-webkit-scrollbar {
  display: none;
}

.screenshot-item {
  flex: 0 0 auto;
  scroll-snap-align: center;
  transition: var(--transition);
  transform: rotateY(-15deg) scale(0.92);
  filter: brightness(0.7);
}

.screenshot-item:hover {
  transform: rotateY(0deg) scale(1);
  filter: brightness(1);
  z-index: 10;
}

.phone-frame {
  width: 260px;
  height: 540px;
  background: #000;
  border-radius: 36px;
  padding: 10px;
  position: relative;
  box-shadow:
    0 0 0 3px rgba(255, 255, 255, 0.15),
    0 25px 50px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(0, 0, 0, 0.3);
}

.phone-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 26px;
  background: #000;
  border-bottom-left-radius: 14px;
  border-bottom-right-radius: 14px;
  z-index: 5;
}

.phone-content {
  width: 100%;
  height: 100%;
  background: #111;
  border-radius: 28px;
  overflow: hidden;
}

.phone-content img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.screenshots-scroll::before,
.screenshots-scroll::after {
  content: '';
  flex: 1 0 0;
  min-width: 0;
}

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

.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow);
}

.testimonial-stars {
  color: rgba(255, 255, 255, 0.15);
  margin-bottom: 16px;
}

[data-theme="light"] .testimonial-stars {
  color: rgba(0, 0, 0, 0.1);
}

.testimonial-stars .active {
  color: #F59E0B;
}

.testimonial-text {
  font-size: 1.05rem;
  font-style: italic;
  margin-bottom: 20px;
  line-height: 1.7;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--project-primary), var(--project-secondary));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.author-info h4 {
  font-size: 1rem;
  margin-bottom: 2px;
}

.author-info span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-bottom: 24px;
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.pricing-card.featured {
  border-color: var(--project-primary);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
}

.pricing-card.featured::before {
  content: 'POPULAR';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--project-primary);
  color: white;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 1px;
}

html[dir="rtl"] .pricing-card.featured::before {
  content: 'الأكثر شعبية';
  letter-spacing: 0;
}

.pricing-card h3 {
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.pricing-price {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--project-primary);
  margin-bottom: 24px;
}

.pricing-features {
  text-align: start;
  margin-bottom: 28px;
  flex: 1;
}

.pricing-features li {
  margin-bottom: 12px;
  padding-inline-start: 24px;
  position: relative;
  color: var(--text-muted);
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  inset-inline-start: 0;
  color: var(--project-primary);
  font-weight: 700;
}

.pricing-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Purchase Form */
.purchase-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 800px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-alt);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--project-primary);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

.form-status {
  min-height: 24px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 16px;
}

.form-status.success {
  color: #10B981;
}

.form-status.error {
  color: #EF4444;
}

/* Content Pages (Privacy / Terms / Changelog) */
.content-page {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
}

.content-container {
  max-width: 850px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
}

.content-header {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border);
}

.content-logo {
  width: 90px;
  height: 90px;
  border-radius: 20px;
  margin: 0 auto 20px;
}

.content-header h1 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.content-header .app-name {
  color: var(--project-primary);
  font-weight: 600;
  margin-bottom: 8px;
}

.content-header .date {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.content-section {
  margin-bottom: 32px;
}

.content-section:last-child {
  margin-bottom: 0;
}

.content-section h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--project-primary);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.content-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 20px 0 10px;
}

.content-section p {
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.8;
}

.content-section ul {
  margin-bottom: 16px;
  padding-inline-start: 24px;
}

.content-section ul li {
  color: var(--text-muted);
  margin-bottom: 8px;
  list-style-type: disc;
}

.content-section strong {
  color: var(--text);
}

/* Changelog specific */
.version-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
}

.version-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}

.version-number {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--project-primary);
}

.version-date {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.05);
  color: var(--project-primary);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-inline-start: 10px;
}

.changelog-list {
  list-style: none;
  padding: 0 !important;
}

.changelog-list li {
  position: relative;
  padding-inline-start: 24px;
  margin-bottom: 12px;
  color: var(--text-muted);
  list-style-type: none !important;
}

.changelog-list li::before {
  content: '•';
  position: absolute;
  inset-inline-start: 0;
  color: var(--project-primary);
  font-size: 1.5rem;
  top: -8px;
}

/* Footer */
.project-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-top: 50px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 14px;
  max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-links a,
.footer-contact a {
  display: block;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--project-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* WhatsApp Float */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  inset-inline-end: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1) translateY(-2px);
  color: white;
}

/* Get Login Page */
.get-login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
}

.get-login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  max-width: 500px;
  box-shadow: var(--shadow);
}

.get-login-card img {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  margin: 0 auto 24px;
}

.get-login-card h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.get-login-card p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

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

  .hero-actions,
  .platforms {
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  .desktop-back,
  .header-actions .theme-toggle,
  .header-actions .lang-toggle {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero {
    padding-top: calc(var(--header-height) + 40px);
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-logo {
    width: 90px;
    height: 90px;
  }

  .section {
    padding: 60px 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .phone-frame {
    width: 220px;
    height: 460px;
  }

  .content-container {
    padding: 28px 22px;
  }

  .purchase-form {
    padding: 28px 22px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .whatsapp-float {
    inset-inline-end: 16px;
    bottom: 16px;
  }

  .get-login-card {
    padding: 32px 24px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}