/* Calvo Landing Page CSS - Based on Design Tokens */

:root {
  /* Color System */
  --primary-main: #4f46e5;
  --primary-light: #818cf8;
  --primary-dark: #3730a3;
  --primary-container: #e0e7ff;
  --primary-on-container: #312e81;

  --secondary-main: #0d9488;
  --secondary-light: #2dd4bf;
  --secondary-dark: #0f766e;
  --secondary-container: #ccfbf1;
  --secondary-on-container: #134e4a;

  --tertiary-main: #f59e0b;
  --tertiary-light: #fcd34d;
  --tertiary-dark: #d97706;
  --tertiary-container: #fef3c7;
  --tertiary-on-container: #78350f;

  --error-main: #ef4444;
  --success-main: #10b981;

  --neutral-0: #ffffff;
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  --surface-background: #fafbfc;
  --surface-card: #ffffff;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 20px;
  --spacing-2xl: 24px;
  --spacing-3xl: 32px;
  --spacing-4xl: 40px;
  --spacing-5xl: 48px;
  --spacing-6xl: 64px;
  --spacing-7xl: 80px;
  --spacing-8xl: 96px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-2: 0 2px 6px rgba(0, 0, 0, 0.08);
  --shadow-3: 0 4px 10px rgba(0, 0, 0, 0.1);
  --shadow-4: 0 8px 16px rgba(0, 0, 0, 0.12);
  --shadow-5: 0 12px 24px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-standard: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-emphasized: 350ms cubic-bezier(0.4, 0, 0, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans',
    'Hiragino Kaku Gothic ProN', 'Yu Gothic UI', Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--neutral-900);
  background-color: var(--surface-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-display: swap;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all var(--transition-standard);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  box-shadow: var(--shadow-2);
  border-bottom-color: var(--neutral-200);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-main);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  color: var(--neutral-600);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-main);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-main);
  transition: width var(--transition-standard);
}

.nav-link:hover::after {
  width: 100%;
}

/* Hero Section */
.hero {
  padding: 160px 0 var(--spacing-6xl);
  background: linear-gradient(
    135deg,
    var(--primary-container) 0%,
    var(--neutral-50) 100%
  );
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234F46E5' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-6xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--primary-container);
  color: var(--primary-on-container);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  max-width: fit-content;
}

.hero-title {
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -1px;
}

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

.hero-subtitle {
  font-size: 18px;
  color: var(--neutral-600);
  margin-bottom: var(--spacing-3xl);
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-4xl);
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-2xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: all var(--transition-standard);
  border: 2px solid transparent;
}

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

.btn-primary span {
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-3);
}

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

.btn-outline:hover {
  background: var(--primary-container);
  transform: translateY(-2px);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  gap: var(--spacing-2xl);
  align-items: center;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--neutral-900);
}

.stat-label {
  font-size: 12px;
  color: var(--neutral-500);
  margin-top: var(--spacing-xs);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--neutral-300);
}

/* Hero Image */
.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  position: relative;
  width: 280px;
  height: 580px;
  background: var(--neutral-900);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-sm);
  box-shadow: var(--shadow-5);
  z-index: 2;
}

.phone-screen {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-xl);
}

.phone-notch {
  position: absolute;
  top: var(--spacing-sm);
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 28px;
  background: var(--neutral-900);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  z-index: 3;
}

.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-4);
  animation: float 3s ease-in-out infinite;
  z-index: 3;
}

.card-1 {
  top: 10%;
  left: -20px;
  animation-delay: 0s;
}

.card-2 {
  bottom: 20%;
  left: -30px;
  animation-delay: 0.5s;
}

.card-3 {
  top: 30%;
  right: -20px;
  animation-delay: 1s;
}

.card-info {
  display: flex;
  flex-direction: column;
}

.card-label {
  font-size: 11px;
  color: var(--neutral-500);
}

.card-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--neutral-900);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Sections */
.section {
  padding: var(--spacing-8xl) 0;
}

.section-light {
  background: var(--neutral-50);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-6xl);
}

.section-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--primary-container);
  color: var(--primary-on-container);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(32px, 4vw, 40px);
  font-weight: 700;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--neutral-600);
  max-width: 600px;
  margin: 0 auto;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  background: white;
  padding: var(--spacing-3xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  transition: all var(--transition-standard);
  opacity: 0;
  transform: translateY(20px);
}

.feature-card.animate {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-3);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.icon-primary {
  background: var(--primary-container);
  color: var(--primary-main);
}

.icon-secondary {
  background: var(--secondary-container);
  color: var(--secondary-main);
}

.icon-tertiary {
  background: var(--tertiary-container);
  color: var(--tertiary-main);
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-md);
}

.feature-desc {
  font-size: 15px;
  color: var(--neutral-600);
  line-height: 1.8;
}

/* Screenshots */
.screenshots-slider {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.screenshot-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
  transition: all var(--transition-standard);
  opacity: 0;
  transform: translateY(20px);
}

.screenshot-card.animate {
  opacity: 1;
  transform: translateY(0);
}

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

.screenshot-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  background: var(--neutral-100);
}

.screenshot-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--neutral-900);
  margin: var(--spacing-lg) var(--spacing-lg) var(--spacing-xs);
}

.screenshot-desc {
  font-size: 14px;
  color: var(--neutral-600);
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

/* Users Grid */
.users-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.user-card {
  background: white;
  padding: var(--spacing-3xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  transition: all var(--transition-standard);
  opacity: 0;
  transform: translateY(20px);
}

.user-card.animate {
  opacity: 1;
  transform: translateY(0);
}

.user-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-3);
}

.user-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-container);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: var(--primary-main);
}

.user-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-md);
}

.user-desc {
  font-size: 15px;
  color: var(--neutral-600);
  line-height: 1.8;
}

/* Security Section */
.security-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-6xl);
  align-items: center;
}

.security-text {
  max-width: 540px;
}

.security-features {
  margin-top: var(--spacing-3xl);
}

.security-item {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.security-item h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-xs);
}

.security-item p {
  font-size: 14px;
  color: var(--neutral-600);
  line-height: 1.6;
}

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

.security-circle {
  width: 300px;
  height: 300px;
  background: linear-gradient(
    135deg,
    var(--primary-container) 0%,
    var(--secondary-container) 100%
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-main);
  position: relative;
}

.security-particles {
  position: absolute;
  width: 400px;
  height: 400px;
}

.particle {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--primary-main);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.particle:nth-child(1) {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.particle:nth-child(2) {
  top: 60%;
  right: 10%;
  animation-delay: 0.5s;
}

.particle:nth-child(3) {
  bottom: 20%;
  left: 50%;
  animation-delay: 1s;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.5);
    opacity: 0;
  }
}

/* CTA Section */
.cta-section {
  background: linear-gradient(
    135deg,
    var(--primary-main) 0%,
    var(--primary-dark) 100%
  );
  color: white;
}

.cta-content {
  text-align: center;
}

.cta-title {
  font-size: clamp(32px, 4vw, 40px);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.5px;
}

.cta-subtitle {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: var(--spacing-3xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.store-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-2xl);
  background: white;
  color: var(--neutral-900);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-standard);
  min-width: 200px;
}

.store-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-4);
}

.store-btn-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.store-btn-label {
  font-size: 16px;
  font-weight: 700;
}

.store-btn-sub {
  font-size: 11px;
  color: var(--neutral-600);
}

/* Footer */
.footer {
  background: var(--neutral-900);
  color: var(--neutral-300);
  padding: var(--spacing-6xl) 0 var(--spacing-3xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-6xl);
  margin-bottom: var(--spacing-4xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  margin-bottom: var(--spacing-md);
}

.footer-brand .logo-text {
  color: white;
}

.footer-desc {
  font-size: 14px;
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--neutral-300);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--transition-fast);
}

.contact-link:hover {
  color: white;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-3xl);
}

.footer-links-title {
  font-size: 14px;
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-lg);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-link {
  display: block;
  color: var(--neutral-400);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: white;
}

.footer-bottom {
  padding-top: var(--spacing-3xl);
  border-top: 1px solid var(--neutral-800);
  text-align: center;
}

.footer-copy {
  font-size: 13px;
  color: var(--neutral-500);
}

/* Icons */
.icon-xs {
  width: 14px;
  height: 14px;
}
.icon-sm {
  width: 16px;
  height: 16px;
}
.icon-md {
  width: 20px;
  height: 20px;
}
.icon-lg {
  width: 24px;
  height: 24px;
}
.icon-xl {
  width: 32px;
  height: 32px;
}
.icon-2xl {
  width: 40px;
  height: 40px;
}
.icon-3xl {
  width: 48px;
  height: 48px;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

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

  .hero-image {
    margin-top: var(--spacing-4xl);
  }

  .security-content {
    grid-template-columns: 1fr;
  }

  .security-visual {
    order: -1;
  }
}

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

  .language-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .features-grid,
  .screenshots-slider,
  .users-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
  }

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

@media (max-width: 480px) {
  .phone-mockup {
    width: 240px;
    height: 500px;
  }

  .floating-card {
    display: none;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .store-btn {
    width: 100%;
  }

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

/* Print */
@media print {
  .header,
  .cta-section,
  .footer {
    display: none;
  }
}