/* JLPT Anki Generator - Japanese Visual Novel Style */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@400;600&display=swap');

:root {
  --bg-primary: #fef6f6;
  --bg-secondary: #fff9f9;
  --text-primary: #4a4a4a;
  --text-secondary: #7a7a7a;
  --accent-pink: #ffb7c5;
  --accent-dark: #e89baf;
  --accent-red: #c45c6a;
  --border-color: #f0d0d5;
  --shadow-soft: rgba(255, 183, 197, 0.3);
  --vn-box-bg: rgba(255, 255, 255, 0.95);
}

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: linear-gradient(135deg, #fef6f6 0%, #fff0f3 50%, #fef6f6 100%);
  color: var(--text-primary);
  line-height: 1.8;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Sakura Background Animation */
.sakura-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.sakura-petal {
  position: absolute;
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-dark) 100%);
  border-radius: 50% 0 50% 50%;
  opacity: 0.6;
  animation: fall linear infinite;
}

@keyframes fall {
  0% {
    transform: translateY(-100px) rotate(0deg);
    opacity: 0.8;
  }
  100% {
    transform: translateY(calc(100vh + 100px)) rotate(720deg);
    opacity: 0.3;
  }
}

/* Header */
header {
  position: relative;
  z-index: 10;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 249, 249, 0.9) 100%);
  border-bottom: 2px solid var(--border-color);
  padding: 1.5rem 0;
  box-shadow: 0 2px 20px var(--shadow-soft);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo::before {
  content: '❀';
  font-size: 1.5rem;
}

/* Navigation */
nav ul {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

nav a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
  transition: color 0.3s ease;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-pink);
  transition: width 0.3s ease;
}

nav a:hover {
  color: var(--accent-red);
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

nav a.active {
  color: var(--accent-red);
}

/* Language Switcher - part of nav */
.lang-switcher {
  display: flex;
  gap: 0.3rem;
  align-items: center;
}

.lang-switcher a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.lang-switcher a:hover {
  background: var(--accent-pink);
  color: white;
}

.lang-switcher a.active {
  background: var(--accent-red);
  color: white;
}

/* Main Content */
main {
  position: relative;
  z-index: 10;
  max-width: 1000px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 2rem;
  margin-bottom: 3rem;
}

.hero h1 {
  font-family: 'Noto Serif JP', serif;
  font-size: 3rem;
  color: var(--accent-red);
  margin-bottom: 1rem;
  font-weight: 600;
}

.hero .subtitle {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-weight: 300;
}

.hero .jp-text {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.1rem;
  color: var(--accent-dark);
  margin-bottom: 2rem;
}

/* Visual Novel Style Box */
.vn-box {
  background: var(--vn-box-bg);
  border: 3px solid var(--border-color);
  border-radius: 15px;
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: 
    0 10px 40px var(--shadow-soft),
    inset 0 0 0 1px rgba(255, 255, 255, 0.5);
  position: relative;
}

.vn-box::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  background: linear-gradient(135deg, var(--accent-pink) 0%, transparent 50%, var(--accent-dark) 100%);
  border-radius: 17px;
  z-index: -1;
  opacity: 0.5;
}

.vn-box h2 {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.5rem;
  color: var(--accent-red);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.vn-box h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin: 1.5rem 0 0.8rem;
  font-weight: 600;
}

.vn-box p {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.9rem 2rem;
  background: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-dark) 100%);
  color: white;
  text-decoration: none;
  border-radius: 25px;
  font-weight: 500;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px var(--shadow-soft);
  margin: 0.5rem;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-soft);
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent-red) 100%);
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--accent-pink);
  color: var(--accent-red);
}

.btn-secondary:hover {
  background: var(--accent-pink);
  color: white;
}

/* Feature Cards */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.feature-card {
  background: var(--vn-box-bg);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 1.8rem;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow-soft);
  border-color: var(--accent-pink);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-family: 'Noto Serif JP', serif;
  color: var(--accent-red);
  margin-bottom: 0.8rem;
  font-size: 1.3rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Stats Section */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.5rem;
  margin: 3rem 0;
  text-align: center;
}

.stat-item {
  background: var(--vn-box-bg);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.stat-number {
  font-family: 'Noto Serif JP', serif;
  font-size: 2.5rem;
  color: var(--accent-red);
  font-weight: 600;
  display: block;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.3rem;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--vn-box-bg);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-dark) 100%);
  color: white;
  font-weight: 500;
}

tr:hover {
  background: rgba(255, 183, 197, 0.1);
}

/* Lists */
ul, ol {
  margin: 1rem 0 1rem 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Code blocks */
code {
  background: rgba(255, 183, 197, 0.2);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  color: var(--accent-red);
}

pre {
  background: #f8f4f5;
  padding: 1.5rem;
  border-radius: 10px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  margin: 1rem 0;
}

pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

/* Footer */
footer {
  position: relative;
  z-index: 10;
  background: linear-gradient(180deg, rgba(255, 249, 249, 0.9) 0%, rgba(255, 255, 255, 0.95) 100%);
  border-top: 2px solid var(--border-color);
  padding: 2rem;
  text-align: center;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1rem;
}

.footer-links a {
  color: var(--accent-red);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Releases Page */
.release-card {
  background: var(--vn-box-bg);
  border: 2px solid var(--border-color);
  border-radius: 15px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.release-card:hover {
  box-shadow: 0 10px 30px var(--shadow-soft);
  border-color: var(--accent-pink);
}

.release-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.release-version {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.5rem;
  color: var(--accent-red);
  font-weight: 600;
}

.release-date {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.release-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: var(--accent-pink);
  color: white;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.release-badge.latest {
  background: var(--accent-red);
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }

  nav ul {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .lang-switcher {
    gap: 0.2rem;
  }

  .lang-switcher a {
    font-size: 0.75rem;
    padding: 0.15rem 0.4rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero .subtitle {
    font-size: 1.1rem;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .release-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Decorative Elements */
.decoration {
  text-align: center;
  margin: 2rem 0;
  color: var(--accent-pink);
  font-size: 1.5rem;
  letter-spacing: 1rem;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-pink);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-dark);
}

/* Loading animation for buttons */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.btn.loading {
  animation: pulse 1.5s ease-in-out infinite;
}