/* Design System CSS Tokens - Warm Dark Walnut Theme */
:root {
  --color-bg: #141311;
  --color-surface: #1e1c18;
  --color-surface-hover: #26231f;
  --color-border: #332f29;
  --color-text-primary: #ebdcc7;
  --color-text-secondary: #a39582;
  
  /* App State Color Tokens */
  --color-green: #2d623b;
  --color-green-light: rgba(45, 98, 59, 0.15);
  --color-orange: #cc5a1b;
  --color-orange-light: rgba(204, 90, 27, 0.15);
  --color-red: #b8232f;
  --color-red-light: rgba(184, 35, 47, 0.15);
  
  --color-blue: #2a5c91;
  --color-blue-light: rgba(42, 92, 145, 0.15);
  
  --font-heading: 'Bitter', serif;
  --font-body: 'Nunito', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.7; /* 0.1 added for light type on dark backgrounds */
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
}

.section-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
}

.section-title {
  font-size: 38px;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 65ch; /* Capped line length to 65ch */
  margin: 0 auto 50px auto;
}

/* Header styling */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(20, 19, 17, 0.9);
  border-bottom: 1px solid var(--color-border);
}

.header-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.app-title {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

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

/* Button utility classes */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px; /* Smoother corner */
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.2s ease, opacity 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn:active {
  transform: scale(0.98);
}

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

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.btn-secondary:hover {
  background-color: var(--color-surface-hover);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  border-radius: 8px;
}

/* Hero Section */
.hero {
  padding: 80px 24px;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.hero-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 60px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.badge {
  background-color: var(--color-green-light);
  color: #a5d6a7;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-content h1 {
  font-size: 54px;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--color-text-primary); /* Solid color instead of gradient text */
}

.hero-content p {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  max-width: 65ch; /* Capped line length to 65ch */
}

.download-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.store-btn {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 10px 20px;
  border-radius: 14px; /* Smoother corner */
  display: flex;
  align-items: center;
  gap: 12px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.store-btn:hover:not(.disabled) {
  background-color: var(--color-surface-hover);
  border-color: var(--color-text-secondary);
}

.store-btn .material-symbols-rounded {
  font-size: 32px;
}

.store-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.store-text small {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.store-text strong {
  font-size: 15px;
  color: var(--color-text-primary);
}

.store-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Phone Mockup Screen */
.hero-preview {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 290px;
  height: 580px;
  background-color: #26231f;
  border-radius: 38px;
  border: 10px solid #332f29;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  overflow: hidden;
  position: relative;
}

.phone-screen {
  background-color: var(--color-bg);
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.phone-screenshot-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.mock-status-bar {
  padding: 8px 20px;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--color-text-secondary);
}

.mock-icons {
  display: flex;
  gap: 4px;
}

.mock-app-bar {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mock-title-area {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
}

.mock-logo {
  width: 22px;
  height: 22px;
  border-radius: 6px;
}

.mock-sync-icon {
  font-size: 18px;
  color: var(--color-blue);
}

.rotating {
  animation: spin 2.5s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.mock-list {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-grow: 1;
}

/* Mock Card Styling - Coded with full borders instead of side-stripes */
.mock-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Full borders and dot colors instead of side stripe borders */
.mock-card.card-red { border-color: var(--color-red); }
.mock-card.card-red .status-dot { background-color: var(--color-red); }

.mock-card.card-orange { border-color: var(--color-orange); }
.mock-card.card-orange .status-dot { background-color: var(--color-orange); }

.mock-card.card-green { border-color: var(--color-green); }
.mock-card.card-green .status-dot { background-color: var(--color-green); }

.card-info {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-info strong {
  font-size: 14px;
}

.card-info small {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.card-days {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
}

.card-red .card-days { color: var(--color-red); background-color: var(--color-red-light); }
.card-orange .card-days { color: var(--color-orange); background-color: var(--color-orange-light); }
.card-green .card-days { color: var(--color-green); background-color: var(--color-green-light); }

/* Features Grid */
.features {
  border-bottom: 1px solid var(--color-border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 30px;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  background-color: var(--color-surface-hover);
}

.icon-box {
  display: inline-flex;
  padding: 12px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 28px;
}

.icon-box.color-green { color: var(--color-green); background-color: var(--color-green-light); }
.icon-box.color-blue { color: var(--color-blue); background-color: var(--color-blue-light); }
.icon-box.color-orange { color: var(--color-orange); background-color: var(--color-orange-light); }

.feature-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 14px;
}

/* Demo Section styling */
.demo-section {
  border-bottom: 1px solid var(--color-border);
}

.demo-card-builder {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  overflow: hidden;
}

.demo-inputs {
  padding: 40px;
  border-right: 1px solid var(--color-border);
}

.demo-inputs h3, .demo-preview-area h3 {
  font-size: 20px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.form-group input, .form-group select {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: 14px;
  outline: none;
}

.form-group input:focus, .form-group select:focus {
  border-color: var(--color-text-secondary);
}

.demo-preview-area {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

.demo-preview-area .mock-card {
  width: 100%;
  max-width: 320px;
  margin-top: 20px;
}

.preview-explanation {
  margin-top: 30px;
  font-size: 13px;
  color: var(--color-text-secondary);
  align-self: flex-start;
}

.preview-explanation ul {
  list-style: none;
  margin-top: 10px;
}

.preview-explanation li {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dot-green, .dot-orange, .dot-red {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.dot-green { background-color: var(--color-green); }
.dot-orange { background-color: var(--color-orange); }
.dot-red { background-color: var(--color-red); }

/* P2P Sync Section styling */
.sync-section {
  border-bottom: 1px solid var(--color-border);
}

.sync-anim-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 40px;
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
}

.device {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 24px;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 160px;
}

.device .material-symbols-rounded {
  font-size: 48px;
  color: var(--color-text-secondary);
}

.ip-label {
  font-size: 11px;
  color: var(--color-text-secondary);
  background-color: var(--color-surface);
  padding: 2px 6px;
  border-radius: 4px;
}

.sync-path {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.sync-path svg {
  overflow: visible;
}

/* Download Section */
.download-section {
  background-color: var(--color-surface);
}

.download-wrapper {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
}

.download-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 40px;
}

.download-card h3 {
  font-size: 24px;
  margin-bottom: 16px;
}

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

.download-card ul {
  list-style: none;
}

.download-card li {
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.badge-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-green-light);
  color: var(--color-green);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
}

/* Footer styling */
footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 24px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

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

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .section-title {
    font-size: 28px;
  }
  
  .header-container {
    flex-direction: column;
    gap: 16px;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-content {
    align-items: center;
  }
  
  .hero-content h1 {
    font-size: 40px;
  }
  
  .download-buttons {
    justify-content: center;
  }
  
  .demo-card-builder {
    grid-template-columns: 1fr;
  }
  
  .demo-inputs {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  
  .download-wrapper {
    grid-template-columns: 1fr;
  }
}

.real-card-preview-container {
  width: 100%;
  max-width: 320px;
  margin-top: 20px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  display: flex;
  justify-content: center;
  background-color: var(--color-surface);
}

.real-card-preview-img {
  width: 100%;
  height: auto;
  display: block;
}