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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --background: #fafafa;
  --card: #ffffff;
  --border: #e5e7eb;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
}

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

a:hover {
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  text-decoration: none;
}

.btn-large {
  padding: 18px 36px;
  font-size: 1.125rem;
}

/* Header */
header {
  background: white;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--primary);
  color: white;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

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

.nav-links {
  display: flex;
  gap: 32px;
}

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

.nav-links a:hover {
  color: var(--primary);
  text-decoration: none;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}

/* Hero */
.hero {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(180deg, white 0%, var(--background) 100%);
}

.hero h1 {
  margin-bottom: 20px;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* App Screenshots */
.app-screenshots {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 60px;
  padding: 0 20px;
}

.screenshot {
  text-align: center;
}

.screenshot img {
  width: 280px;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 8px solid #1a1a1a;
}

.screenshot-label {
  margin-top: 16px;
  font-weight: 600;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .app-screenshots {
    flex-direction: column;
    align-items: center;
    gap: 40px;
  }

  .screenshot img {
    width: 240px;
  }
}

/* Features */
.features {
  padding: 80px 0;
}

.features h2 {
  text-align: center;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: white;
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--border);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 20px;
}

.feature-card h3 {
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-secondary);
}

/* How It Works */
.how-it-works {
  padding: 80px 0;
  background: white;
}

.how-it-works h2 {
  text-align: center;
  margin-bottom: 48px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

@media (max-width: 900px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.step {
  text-align: center;
}

.step-number {
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0 auto 20px;
}

.step h3 {
  margin-bottom: 8px;
}

.step p {
  color: var(--text-secondary);
}

/* CTA Section */
.cta {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(180deg, var(--background) 0%, var(--primary-light) 100%);
}

.cta h2 {
  margin-bottom: 16px;
}

.cta p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: 32px;
}

/* Footer */
footer {
  background: var(--text-primary);
  color: white;
  padding: 64px 0 32px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  margin-bottom: 48px;
}

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    gap: 40px;
  }
}

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

.footer-brand .logo-icon {
  background-color: white;
  color: var(--primary);
}

.footer-brand p {
  color: var(--text-tertiary);
  max-width: 280px;
}

.footer-links {
  display: flex;
  gap: 64px;
}

@media (max-width: 600px) {
  .footer-links {
    flex-direction: column;
    gap: 32px;
  }
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-column h4 {
  color: white;
  margin-bottom: 4px;
}

.footer-column a {
  color: var(--text-tertiary);
}

.footer-column a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 32px;
  text-align: center;
  color: var(--text-tertiary);
}

/* Legal Pages */
.legal-page {
  padding: 48px 0 80px;
}

.legal-page h1 {
  margin-bottom: 8px;
}

.legal-page .last-updated {
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.legal-content {
  max-width: 800px;
}

.legal-content h2 {
  font-size: 1.5rem;
  margin-top: 40px;
  margin-bottom: 16px;
}

.legal-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.legal-content ul {
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-left: 24px;
}

.legal-content li {
  margin-bottom: 8px;
}

/* Support Page */
.support-hero {
  padding: 64px 0;
  text-align: center;
  background: white;
}

.support-hero h1 {
  margin-bottom: 12px;
}

.support-hero p {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.support-content {
  padding: 48px 0 80px;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

@media (max-width: 768px) {
  .support-grid {
    grid-template-columns: 1fr;
  }
}

.support-card {
  background: white;
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--border);
}

.support-card h3 {
  margin-bottom: 8px;
}

.support-card p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.support-card a.btn {
  display: inline-flex;
}

.faq-section h2 {
  margin-bottom: 24px;
}

.faq-item {
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question:hover {
  background: var(--background);
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-item.open .faq-question::after {
  content: '−';
}

.faq-question::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--text-tertiary);
}

.contact-section {
  margin-top: 48px;
  text-align: center;
  padding: 48px;
  background: white;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.contact-section h2 {
  margin-bottom: 12px;
}

.contact-section p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.contact-email {
  font-size: 1.25rem;
  font-weight: 600;
}