/* Modern Cupertino Inspired Theme - Violet Base (matching app_theme.dart) */
:root {
  /* Primary Violet Palette (from app_theme.dart) */
  --primary-color: #6750A4;
  --secondary-color: #9A82DB;
  --confirm-color: #34C759;
  --destructive-color: #FF3B30;

  /* Gradient Colors */
  --gradient-start: #6750A4;
  --gradient-end: #9A82DB;

  /* iOS System Colors (complementary) */
  --ios-blue: #007AFF;
  --ios-green: #34C759;
  --ios-indigo: #5856D6;
  --ios-orange: #FF9500;
  --ios-pink: #FF2D55;
  --ios-purple: #AF52DE;
  --ios-red: #FF3B30;
  --ios-teal: #5AC8FA;
  --ios-gray: #8E8E93;
  --ios-gray2: #AEAEB2;
  --ios-gray3: #C7C7CC;
  --ios-gray4: #D1D1D6;
  --ios-gray5: #E5E5EA;
  --ios-gray6: #F2F2F7;

  /* Backgrounds (Light Mode - matching app_theme.dart) */
  --bg-color: #F8F7FC;
  /* 薄いバイオレットティント */
  --card-bg: #FFFFFF;
  --header-bg: rgba(248, 247, 252, 0.88);

  /* Text Colors */
  --text-primary: #1C1B1F;
  --text-secondary: #49454F;
  --text-tertiary: #8E8E93;

  /* Spacing & Radius (matching app_theme.dart) */
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --shadow-sm: 0 2px 8px rgba(103, 80, 164, 0.08);
  --shadow-md: 0 8px 24px rgba(103, 80, 164, 0.12);
  --shadow-lg: 0 16px 40px rgba(103, 80, 164, 0.16);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;
}

/* ダークモード対応 (matching app_theme.dart darkTheme) */
@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: #9A82DB;
    /* ダークモードでは明るいバイオレット */
    --secondary-color: #6750A4;

    --bg-color: #121212;
    --card-bg: #1E1E1E;
    --header-bg: rgba(30, 30, 30, 0.88);

    --text-primary: #FFFFFF;
    --text-secondary: #CAC4D0;
    --text-tertiary: #8E8E93;

    --ios-gray6: #1C1C1E;
  }
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h2 {
  font-size: 32px;
}

h3 {
  font-size: 18px;
}

p {
  margin: 0;
}

section {
  padding: 80px 20px;
  max-width: 1000px;
  margin: 0 auto;
}

/* Glassmorphism Header */
.glass {
  background: var(--header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(103, 80, 164, 0.1);
}

@media (prefers-color-scheme: dark) {
  .glass {
    border-bottom: 1px solid rgba(154, 130, 219, 0.15);
  }
}

/* Primary Gradient */
.gradient-primary {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 17px;
  font-weight: 600;
  border-radius: 40px;
  text-decoration: none;
  border: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: white;
  box-shadow: 0 4px 16px rgba(103, 80, 164, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(103, 80, 164, 0.45);
}

.btn-secondary {
  background: rgba(103, 80, 164, 0.1);
  color: var(--primary-color);
}

.btn-secondary:hover {
  background: rgba(103, 80, 164, 0.18);
  transform: translateY(-2px);
}

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: var(--shadow-sm);
}

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

/* Grid Layout */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

/* Badge */
.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  background: linear-gradient(135deg, rgba(103, 80, 164, 0.12) 0%, rgba(154, 130, 219, 0.12) 100%);
  color: var(--primary-color);
  margin-bottom: 16px;
}

/* Feature Icon Container */
.icon-container {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.icon-container.violet {
  background: linear-gradient(135deg, rgba(103, 80, 164, 0.15) 0%, rgba(154, 130, 219, 0.15) 100%);
  color: var(--primary-color);
}

.icon-container.green {
  background: rgba(52, 199, 89, 0.12);
  color: var(--ios-green);
}

.icon-container.orange {
  background: rgba(255, 149, 0, 0.12);
  color: var(--ios-orange);
}

.icon-container.pink {
  background: rgba(255, 45, 85, 0.12);
  color: var(--ios-pink);
}

.icon-container.teal {
  background: rgba(90, 200, 250, 0.12);
  color: var(--ios-teal);
}

/* Step Number */
.step-number {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

/* Tech Badge */
.tech-badge {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  background: var(--card-bg);
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease;
}

.tech-badge:hover {
  transform: translateY(-2px);
}

/* Hero Mockup */
.hero-mockup {
  width: 100%;
  max-width: 800px;
  height: 420px;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  border-radius: var(--radius-xl);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero-mockup::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
  animation: shimmer 8s ease-in-out infinite;
}

@keyframes shimmer {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(20%, 20%);
  }
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Hero Phone */
.hero-phone {
  max-width: 300px;
  animation: float 6s ease-in-out infinite;
}

.hero-phone img {
  width: 100%;
  height: auto;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-12px);
  }
}

/* Floating Badge */
.floating-badge {
  animation: float-badge 4s ease-in-out infinite;
}

@keyframes float-badge {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }
}

/* Screenshot Gallery */
.screenshot-gallery {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  padding: 20px 0;
}

.screenshot-item {
  text-align: center;
  transition: transform 0.3s ease;
}

.screenshot-item:hover {
  transform: scale(1.03);
}

.screenshot-item img {
  width: 220px;
  height: auto;
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
}

.screenshot-label {
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Footer */
footer {
  background: var(--card-bg);
  padding: 48px 20px;
  margin-top: 40px;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Responsive */
@media (max-width: 900px) {
  #hero>div {
    grid-template-columns: 1fr !important;
    gap: 40px !important;
    text-align: center;
  }

  #hero>div>div:first-child {
    order: 1;
  }

  #hero>div>div:last-child {
    order: 0;
  }

  .hero-phone {
    max-width: 240px;
    margin: 0 auto;
  }

  .floating-badge {
    display: none !important;
  }

  #hero h1 {
    font-size: 36px !important;
  }

  #hero>div>div:first-child>div:last-child {
    justify-content: center !important;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 32px !important;
  }

  h2 {
    font-size: 26px;
  }

  section {
    padding: 50px 16px;
  }

  .hero-mockup {
    height: 280px;
  }

  .grid {
    gap: 16px;
  }

  .card {
    padding: 24px;
  }

  .screenshot-gallery {
    gap: 20px;
  }

  .screenshot-item img {
    width: 160px;
    border-radius: 18px;
  }

  header nav {
    display: none !important;
  }

  #usage {
    margin: 0 12px !important;
    padding: 40px 24px !important;
  }

  #cta>div {
    padding: 40px 24px !important;
  }
}