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

:root {
  --brand-primary: #2563eb;
  --brand-dark: #1e40af;
  --brand-light: #60a5fa;
  --brand-accent: #7c3aed;
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  --gradient-brand: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  --gradient-card: linear-gradient(145deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9));
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--brand-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--brand-primary);
}

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

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  text-align: center;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 3rem;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Layout ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 5rem 0;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
}

.nav-logo svg {
  width: 36px;
  height: 36px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  background: var(--gradient-brand);
  color: #fff !important;
  padding: 0.5rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
}

.nav-cta:hover {
  opacity: 0.9;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: 5rem;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -20%;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse, rgba(124, 58, 237, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--brand-light);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.4);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-visual .app-mockup {
  width: 100%;
  max-width: 560px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stat {
  text-align: left;
}

.hero-stat .number {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--brand-light);
}

.hero-stat .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== Features Grid ===== */
#features {
  background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(30, 41, 59, 0.3) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--gradient-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition), border-color var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.3);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.2rem;
  background: rgba(37, 99, 235, 0.15);
  color: var(--brand-light);
}

.feature-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===== Features Showcase ===== */
.features-showcase {
  margin-top: 3.5rem;
  text-align: center;
}

.features-showcase .showcase-label {
  font-size: 1.3rem;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.features-showcase .showcase-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto 1.5rem;
}

.features-showcase .showcase-img {
  width: 100%;
  max-width: 960px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ===== Roadmap / Coming Soon ===== */
#roadmap {
  background: var(--bg-dark);
  position: relative;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.roadmap-card {
  background: var(--gradient-card);
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
}

.roadmap-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 58, 237, 0.5);
}

.roadmap-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-accent), var(--brand-primary));
}

.roadmap-badge {
  display: inline-block;
  background: rgba(124, 58, 237, 0.2);
  color: #a78bfa;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.roadmap-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.roadmap-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===== Platforms ===== */
#platforms {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.3) 0%, var(--bg-dark) 100%);
}

.platforms-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.platform-card {
  background: var(--gradient-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 2rem 2.5rem;
  text-align: center;
  min-width: 160px;
  transition: transform var(--transition), border-color var(--transition);
}

.platform-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.3);
}

.platform-card .platform-icon {
  font-size: 2.5rem;
  margin-bottom: 0.8rem;
}

.platform-card h4 {
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.platform-card .platform-status {
  font-size: 0.8rem;
  font-weight: 600;
}

.platform-card .platform-status.available {
  color: #4ade80;
}

.platform-card .platform-status.coming {
  color: #fbbf24;
}

/* ===== Security ===== */
#security {
  background: var(--bg-dark);
}

.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.security-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.security-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.security-item .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.12);
  color: var(--brand-light);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.security-item h4 {
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.security-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.security-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.lock-graphic {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
  border: 2px solid rgba(37, 99, 235, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
}

.lock-graphic::before {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 1px dashed rgba(37, 99, 235, 0.15);
  animation: spin 30s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== Download / CTA ===== */
#download {
  background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(30, 41, 59, 0.5) 50%, var(--bg-dark) 100%);
  text-align: center;
}

.download-box {
  background: var(--gradient-card);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: var(--radius-lg);
  padding: 3rem;
  max-width: 700px;
  margin: 0 auto;
  box-shadow: var(--shadow-glow);
}

.download-box h2 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.download-box p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.download-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-logo svg {
  width: 28px;
  height: 28px;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.footer-copy {
  width: 100%;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-visual .app-mockup {
    max-width: 400px;
  }

  .security-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .security-visual {
    order: -1;
    margin-bottom: 2rem;
  }

  .security-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(12px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

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

  .mobile-toggle {
    display: block;
  }

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

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

  section {
    padding: 3.5rem 0;
  }

  .hero {
    min-height: auto;
    padding: 7rem 0 3rem;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

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

  .platforms-row {
    flex-direction: column;
    align-items: center;
  }

  .platform-card {
    width: 100%;
    max-width: 300px;
  }

  .download-buttons {
    flex-direction: column;
    align-items: center;
  }
}