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

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-accent: #7c3aed;
  --color-dark: #0f172a;
  --color-dark-secondary: #1e293b;
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container-max: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.06), 0 12px 40px rgba(0,0,0,0.08);
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: #fff;
  color: var(--color-dark);
  border-color: #fff;
}

.btn-secondary {
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-color: var(--color-border);
}

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

.btn-nav {
  padding: 8px 20px;
  font-size: 0.875rem;
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

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

.btn-full {
  width: 100%;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  padding: 12px 0;
}

.navbar.scrolled .logo,
.navbar.scrolled .nav-links a {
  color: var(--color-dark);
}

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

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo:hover {
  color: #fff;
}

.navbar.scrolled .logo:hover {
  color: var(--color-primary);
}

.logo-icon {
  color: var(--color-primary-light);
  font-size: 1.4rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.9);
  font-weight: 500;
  font-size: 0.925rem;
  transition: color var(--transition);
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  transition: all var(--transition);
  border-radius: 2px;
}

.navbar.scrolled .nav-toggle span {
  background: var(--color-dark);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(37,99,235,0.6) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 120px 0 80px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  line-height: 1.7;
}

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

/* ===== About ===== */
.about {
  padding: 100px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about-text h2 {
  font-size: 2rem;
  color: var(--color-dark);
  margin-bottom: 20px;
  font-weight: 700;
}

.about-text p {
  margin-bottom: 16px;
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.7;
}

.stats {
  display: flex;
  gap: 32px;
  margin-top: 32px;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 2px;
}

/* ===== Section Headers ===== */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2rem;
  color: var(--color-dark);
  margin-bottom: 12px;
  font-weight: 700;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-light);
}

/* ===== Apps ===== */
.apps {
  padding: 100px 0;
  background: var(--color-bg-alt);
}

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

.app-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.app-card-image {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.app-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.app-card:hover .app-card-image img {
  transform: scale(1.05);
}

.app-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--color-primary);
  color: #fff;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.app-badge.coming-soon {
  background: var(--color-accent);
}

.app-card-body {
  padding: 28px;
}

.app-card-body h3 {
  font-size: 1.4rem;
  color: var(--color-dark);
  margin-bottom: 4px;
  font-weight: 700;
}

.app-tagline {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.app-card-body p {
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 16px;
}

.app-features {
  list-style: none;
  margin-bottom: 20px;
}

.app-features li {
  padding: 4px 0 4px 24px;
  position: relative;
  font-size: 0.925rem;
  color: var(--color-text);
}

.app-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}

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

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--color-dark);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== Approach ===== */
.approach {
  padding: 100px 0;
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.approach-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

.approach-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.approach-icon {
  width: 56px;
  height: 56px;
  background: rgba(37,99,235,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--color-primary);
}

.approach-card h3 {
  font-size: 1.15rem;
  color: var(--color-dark);
  margin-bottom: 10px;
  font-weight: 700;
}

.approach-card p {
  font-size: 0.925rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== Tech Section ===== */
.tech {
  padding: 80px 0;
  background: var(--color-dark);
  color: #fff;
}

.tech-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.tech-text h2 {
  font-size: 2rem;
  margin-bottom: 16px;
  font-weight: 700;
}

.tech-text p {
  color: rgba(255,255,255,0.75);
  font-size: 1.1rem;
  line-height: 1.7;
}

.tech-image img {
  border-radius: var(--radius);
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* ===== Contact ===== */
.contact {
  padding: 100px 0;
  background: var(--color-bg-alt);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item h4 {
  font-size: 0.85rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.contact-item a {
  font-size: 1.05rem;
  font-weight: 500;
}

.contact-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.contact-card h3 {
  font-size: 1.2rem;
  color: var(--color-dark);
  margin-bottom: 12px;
  font-weight: 700;
}

.contact-card p {
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.7;
}

.contact-form-wrapper {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-dark);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 0.95rem;
  color: var(--color-dark);
  transition: border-color var(--transition);
  background: var(--color-bg-alt);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.form-group textarea {
  resize: vertical;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.925rem;
  line-height: 1.6;
}

.footer-links h4 {
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255,255,255,0.65);
  font-size: 0.925rem;
}

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

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
}

/* ===== Responsive ===== */
@media (max-width: 968px) {
  .about-grid,
  .tech-inner,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

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

  .about-image {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-dark);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    transition: right 0.3s ease;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-content {
    padding: 100px 0 60px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .stats {
    flex-direction: column;
    gap: 16px;
  }

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

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