/* CSS Design System for Labs Morihaya Portal */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette (Dark Theme Default) */
  --primary-hue: 342;
  --primary-sat: 92%;
  --primary-light: 65%;
  --primary: hsl(var(--primary-hue), var(--primary-sat), var(--primary-light));
  --primary-hover: hsl(var(--primary-hue), var(--primary-sat), 55%);
  --primary-glow: hsla(var(--primary-hue), var(--primary-sat), var(--primary-light), 0.15);
  
  --secondary-hue: 215;
  --secondary: hsl(var(--secondary-hue), 85%, 60%);

  --bg-gradient: linear-gradient(135deg, #0b0d13 0%, #151824 100%);
  --background: #0b0d13;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --surface-border: rgba(255, 255, 255, 0.08);
  --surface-border-hover: rgba(255, 255, 255, 0.15);
  
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --text-inverse: #111827;
  
  --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --font-title: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", sans-serif;
  
  --container-width: 800px;
  --border-radius: 16px;
}

@media (prefers-color-scheme: light) {
  :root {
    --primary-light: 55%;
    --primary: hsl(var(--primary-hue), var(--primary-sat), var(--primary-light));
    --primary-hover: hsl(var(--primary-hue), var(--primary-sat), 45%);
    --primary-glow: hsla(var(--primary-hue), var(--primary-sat), var(--primary-light), 0.1);
    
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --background: #f8fafc;
    --surface: rgba(255, 255, 255, 0.7);
    --surface-hover: rgba(255, 255, 255, 0.95);
    --surface-border: rgba(0, 0, 0, 0.06);
    --surface-border-hover: rgba(0, 0, 0, 0.12);
    
    --text: #1e293b;
    --text-muted: #64748b;
    --text-inverse: #ffffff;
    --shadow: 0 8px 32px 0 rgba(148, 163, 184, 0.15);
  }
}

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

body {
  font-family: var(--font-body);
  background: var(--background);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-title);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(to right, var(--text), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: 1.75rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--surface-border);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
}

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

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

/* Layout Containers */
.container {
  max-width: var(--container-width);
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  flex: 1;
}

/* Header & Navigation */
header {
  border-bottom: 1px solid var(--surface-border);
  background: rgba(var(--background), 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  flex-wrap: wrap;
  gap: 1rem;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--primary);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

nav a {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

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

/* Cards & Sections */
.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--border-radius);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}

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

/* Hero Section */
.hero {
  text-align: center;
  padding: 3rem 1rem;
  animation: fadeIn 0.8s ease-out;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 500px;
  margin: 1rem auto 0;
}

/* App Showcase Card */
.app-card {
  display: flex;
  gap: 2rem;
  align-items: center;
}

@media (max-width: 640px) {
  .app-card {
    flex-direction: column;
    text-align: center;
  }
}

.app-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
  box-shadow: 0 8px 16px var(--primary-glow);
  flex-shrink: 0;
}

.app-icon-image {
  display: block;
  object-fit: cover;
  padding: 0;
  background: #91ac91;
}

.release-badge {
  cursor: default;
  border-color: color-mix(in srgb, var(--primary) 45%, transparent);
}

.app-details {
  flex: 1;
}

.app-details h3 {
  flex-wrap: wrap;
  margin-top: 0;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

@media (max-width: 640px) {
  .app-details h3 {
    justify-content: center;
  }
}

.app-tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  background: var(--primary-glow);
  color: var(--primary);
  border: 1px solid rgba(var(--primary-hue), var(--primary-sat), var(--primary-light), 0.2);
  font-weight: 600;
}

.app-details p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  color: var(--text-inverse);
  box-shadow: 0 0 20px var(--primary-glow);
  transform: scale(1.02);
}

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

.btn-outline:hover {
  background: var(--surface);
  border-color: var(--text-muted);
}

/* Language Selector (Tabs) */
.lang-selector {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.lang-btn {
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-btn.active {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

/* Privacy Content Translation */
html[lang="ja"] .en-only,
html[lang="en"] .ja-only {
  display: none !important;
}

/* List styling */
ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Policy specific styling */
.policy-section {
  margin-bottom: 2.5rem;
}

.policy-badge-container {
  display: flex;
  gap: 0.75rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}

.policy-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 50px;
}

.policy-badge > span:first-child {
  color: var(--primary);
  font-weight: bold;
}

/* Footer */
footer {
  border-top: 1px solid var(--surface-border);
  padding: 2rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: auto;
}

.footer-links {
  flex-wrap: wrap;
  padding-inline: 1rem;
  margin-bottom: 1rem;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

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

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

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}