:root {
  --green: #16a34a;
  --green-dark: #15803d;
  --green-light: #dcfce7;
  --green-50: #f0fdf4;
  --dark: #0f172a;
  --dark-soft: #1e293b;
  --gray-900: #111827;
  --gray-700: #374151;
  --gray-600: #4b5563;
  --gray-500: #6b7280;
  --gray-400: #9ca3af;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --gray-50: #f9fafb;
  --white: #ffffff;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-700);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

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

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo .dot { color: var(--green); }

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

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active { color: var(--green); }

.nav-cta {
  background: var(--green);
  color: var(--white) !important;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  transition: background 0.2s;
}

.nav-cta:hover { background: var(--green-dark); }

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

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: all 0.3s;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 64px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 64px);
    background: var(--white);
    flex-direction: column;
    padding: 32px;
    gap: 0;
    box-shadow: var(--shadow-xl);
    transition: right 0.3s ease;
    align-items: stretch;
  }
  .nav-links.active { right: 0; }
  .nav-links a {
    padding: 14px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 16px;
  }
  .nav-cta { text-align: center; margin-top: 12px; border-bottom: none !important; }
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
  padding: 100px 0 80px;
  color: var(--white);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-actions { justify-content: center; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(22, 163, 74, 0.15);
  border: 1px solid rgba(22, 163, 74, 0.3);
  color: #4ade80;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--white);
}

.hero h1 span { color: var(--green); }

.hero-sub {
  font-size: 18px;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 500px;
}

@media (max-width: 900px) {
  .hero-sub { margin-left: auto; margin-right: auto; }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary { background: var(--green); color: var(--white); }
.btn-primary:hover { background: var(--green-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1px solid var(--gray-300); color: var(--white); }
.btn-outline:hover { border-color: var(--white); }
.btn-outline-dark { background: transparent; border: 1px solid var(--gray-300); color: var(--gray-700); }
.btn-outline-dark:hover { border-color: var(--green); color: var(--green); }

/* Phone Mockup */
.hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

.phone-mockup {
  width: 280px;
  background: var(--white);
  border-radius: 32px;
  padding: 12px;
  box-shadow: 0 40px 80px rgba(0,0,0,0.4);
  transform: perspective(1000px) rotateY(-5deg) rotateX(3deg);
  transition: transform 0.5s ease;
}

.phone-mockup:hover { transform: perspective(1000px) rotateY(0deg) rotateX(0deg) scale(1.02); }

.phone-screen {
  border-radius: 24px;
  overflow: hidden;
  background: var(--gray-100);
}

.phone-screen img {
  width: 100%;
  height: auto;
  display: block;
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-alt { background: var(--gray-50); }

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Feature Cards */
.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: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--green-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* Split Section */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

@media (max-width: 900px) {
  .split-section { grid-template-columns: 1fr; text-align: center; }
  .split-section .text { order: 1; }
  .split-section .visual { order: 2; }
  .split-list { display: inline-block; text-align: left; }
}

.split-section .section-badge { text-align: left; }

.split-title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.split-desc {
  font-size: 16px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 28px;
}

.split-list {
  list-style: none;
}

.split-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-700);
}

.split-list .check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--green-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  font-size: 14px;
  flex-shrink: 0;
}

/* App Screenshot Card */
.screenshot-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-lg);
}

.screenshot-card img {
  width: 100%;
  border-radius: var(--radius);
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }

.stat-card {
  text-align: center;
  padding: 32px 16px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
}

.stat-value {
  font-size: 36px;
  font-weight: 800;
  color: var(--green);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: var(--gray-500);
  font-weight: 500;
}

/* CTA */
.cta-section {
  background: var(--dark);
  padding: 80px 0;
  text-align: center;
  color: var(--white);
}

.cta-section h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-section p {
  font-size: 17px;
  color: var(--gray-400);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Footer */
.footer {
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  padding: 60px 0 30px;
}

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

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

.footer h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

.footer ul { list-style: none; }

.footer ul li { margin-bottom: 10px; }

.footer ul a {
  font-size: 14px;
  color: var(--gray-500);
  transition: color 0.2s;
}

.footer ul a:hover { color: var(--green); }

.footer-bottom {
  border-top: 1px solid var(--gray-200);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--gray-400);
}

@media (max-width: 600px) {
  .footer-bottom { flex-direction: column; gap: 12px; }
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Subpage Hero */
.subpage-hero {
  background: var(--dark);
  padding: 100px 0 60px;
  text-align: center;
  color: var(--white);
}

.subpage-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.subpage-hero p {
  font-size: 17px;
  color: var(--gray-400);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Features Page */
.feature-detail-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 768px) {
  .feature-detail-card { grid-template-columns: 1fr; padding: 32px 24px; }
}

.feature-detail-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.feature-detail-card p {
  font-size: 15px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* About Page */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

@media (max-width: 900px) {
  .about-story { grid-template-columns: 1fr; }
}

.about-quote {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 48px;
  color: var(--white);
}

.about-quote blockquote {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--green);
  margin-bottom: 16px;
}

.about-quote p {
  font-size: 15px;
  color: var(--gray-400);
  line-height: 1.7;
}

/* Privacy Page */
.privacy-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}

.privacy-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin: 32px 0 12px;
}

.privacy-content p {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 16px;
}

.privacy-content ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.privacy-content li {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 8px;
}