/* ========================================
   Lumina - Premium Support Page Styles
   心理学タロットアプリのサポートページ
   Dark Mystical Theme with Gold Accents
   ======================================== */

/* CSS Variables - Design Tokens */
:root {
  /* Primary Colors - Mystical Purple */
  --color-primary: #9b7dd4;
  --color-primary-light: #b99ee3;
  --color-primary-dark: #7b5dbf;

  /* Secondary Colors - Gold Accent */
  --color-gold: #d4af37;
  --color-gold-light: #e5c76a;
  --color-gold-dark: #b89530;

  /* Background Colors - Deep Dark */
  --color-bg-primary: #0d0b14;
  --color-bg-secondary: #151220;
  --color-bg-tertiary: #1c1829;
  --color-bg-card: #1a1625;
  --color-bg-elevated: #201c2d;

  /* Text Colors */
  --color-text-primary: #f5f0fa;
  --color-text-secondary: #b8b0c8;
  --color-text-tertiary: #8a8499;
  --color-text-hint: #6b6575;

  /* Semantic Colors */
  --color-success: #7dd47b;
  --color-info: #7b9bd4;
  --color-warning: #e5c76a;

  /* Borders & Overlays */
  --border-subtle: rgba(212, 175, 55, 0.2);
  --border-default: rgba(212, 175, 55, 0.4);
  --overlay-light: rgba(255, 255, 255, 0.08);
  --overlay-scrim: rgba(13, 11, 20, 0.85);

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

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;

  /* Typography */
  --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    Roboto, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;

  /* Shadows */
  --shadow-glow: 0 0 20px rgba(212, 175, 55, 0.3);
  --shadow-glow-strong: 0 0 40px rgba(212, 175, 55, 0.5);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);

  /* Transitions */
  --transition-fast: 200ms ease-out;
  --transition-normal: 300ms ease-out;
  --transition-slow: 500ms ease-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      ellipse at 20% 20%,
      rgba(155, 125, 212, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 80% 80%,
      rgba(212, 175, 55, 0.06) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 50% 50%,
      rgba(155, 125, 212, 0.04) 0%,
      transparent 70%
    );
  pointer-events: none;
  z-index: -1;
}

/* Stars Background Animation */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(
      2px 2px at 20px 30px,
      rgba(212, 175, 55, 0.4),
      transparent
    ),
    radial-gradient(2px 2px at 40px 70px, rgba(155, 125, 212, 0.3), transparent),
    radial-gradient(1px 1px at 90px 40px, rgba(255, 255, 255, 0.3), transparent),
    radial-gradient(2px 2px at 130px 80px, rgba(212, 175, 55, 0.3), transparent),
    radial-gradient(
      1px 1px at 160px 120px,
      rgba(155, 125, 212, 0.4),
      transparent
    );
  background-size: 200px 200px;
  animation: twinkle 8s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
  opacity: 0.6;
}

@keyframes twinkle {
  0%,
  100% {
    opacity: 0.6;
  }
  50% {
    opacity: 0.3;
  }
}

/* Container */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xl);
}

/* Header */
.header {
  text-align: center;
  padding: var(--spacing-5xl) 0 var(--spacing-3xl);
  position: relative;
}

.header::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(
    circle,
    rgba(212, 175, 55, 0.15) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.app-icon {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-glow-strong), var(--shadow-card);
  margin-bottom: var(--spacing-xl);
  position: relative;
  animation: float 6s ease-in-out infinite;
}

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

.app-name {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 4px;
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 0 30px rgba(212, 175, 55, 0.5);
}

.header-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.divider-line {
  width: 60px;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-gold),
    transparent
  );
}

.divider-star {
  color: var(--color-gold);
  font-size: 14px;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(0.9);
  }
}

.app-tagline {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  letter-spacing: 2px;
  font-weight: 300;
}

/* Main Content */
.main-content {
  padding: var(--spacing-2xl) 0;
}

/* Section Cards */
.section-card {
  background: linear-gradient(
    135deg,
    var(--color-bg-card),
    var(--color-bg-tertiary)
  );
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.section-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-gold),
    transparent
  );
  opacity: 0.5;
}

.section-card:hover {
  border-color: var(--border-default);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.section-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-base);
  margin-bottom: var(--spacing-lg);
}

.section-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(212, 175, 55, 0.15);
  border-radius: var(--radius-md);
  color: var(--color-gold);
  font-size: 24px;
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
}

.section-content {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* Feature List */
.feature-list {
  list-style: none;
  margin-top: var(--spacing-lg);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--overlay-light);
}

.feature-item:last-child {
  border-bottom: none;
}

.feature-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(155, 125, 212, 0.2);
  border-radius: var(--radius-sm);
  color: var(--color-primary-light);
  font-size: 14px;
}

.feature-text {
  flex: 1;
}

.feature-title {
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.feature-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* Contact Section */
.contact-section {
  text-align: center;
  background: linear-gradient(
    135deg,
    var(--color-bg-elevated),
    var(--color-bg-tertiary)
  );
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: var(--spacing-3xl);
  margin-top: var(--spacing-2xl);
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(212, 175, 55, 0.08) 0%,
    transparent 50%
  );
  animation: rotate 30s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.contact-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-gold);
  margin-bottom: var(--spacing-base);
  position: relative;
}

.contact-desc {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: white;
  padding: var(--spacing-base) var(--spacing-2xl);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-normal);
  position: relative;
  box-shadow: 0 4px 20px rgba(155, 125, 212, 0.4);
}

.contact-email:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(155, 125, 212, 0.5);
}

.contact-email svg {
  width: 20px;
  height: 20px;
}

/* Links */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-base);
  margin-top: var(--spacing-xl);
}

.link-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-base);
  background: var(--overlay-light);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-normal);
}

.link-card:hover {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--border-default);
  color: var(--color-gold);
}

.link-card svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Footer */
.footer {
  text-align: center;
  padding: var(--spacing-3xl) 0;
  margin-top: var(--spacing-2xl);
  border-top: 1px solid var(--border-subtle);
}

.footer-decor {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-star {
  color: var(--color-gold);
  opacity: 0.6;
}

.footer-star.center {
  opacity: 1;
  font-size: 16px;
}

.footer-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  letter-spacing: 1px;
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  margin-top: var(--spacing-base);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-base);
  }

  .header {
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  }

  .app-icon {
    width: 100px;
    height: 100px;
  }

  .app-name {
    font-size: var(--font-size-3xl);
    letter-spacing: 2px;
  }

  .section-card {
    padding: var(--spacing-xl);
  }

  .contact-section {
    padding: var(--spacing-2xl);
  }

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

/* Utility Classes */
.text-gold {
  color: var(--color-gold);
}
.text-primary {
  color: var(--color-primary-light);
}
.text-muted {
  color: var(--color-text-tertiary);
}
.mt-lg {
  margin-top: var(--spacing-lg);
}
.mb-lg {
  margin-bottom: var(--spacing-lg);
}

/* Loading Animation */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.loading-dot {
  width: 8px;
  height: 8px;
  background: var(--color-gold);
  border-radius: 50%;
  animation: bounce 1.4s ease-in-out infinite;
}

.loading-dot:nth-child(1) {
  animation-delay: 0s;
}
.loading-dot:nth-child(2) {
  animation-delay: 0.2s;
}
.loading-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes bounce {
  0%,
  80%,
  100% {
    transform: scale(0.6);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Language Switcher */
.language-switcher {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.lang-button {
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.lang-button:hover {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--border-default);
  color: var(--color-gold);
}

.lang-button.active {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  border-color: transparent;
  color: white;
  box-shadow: 0 2px 12px rgba(155, 125, 212, 0.4);
}

.lang-button.active:hover {
  background: linear-gradient(
    135deg,
    var(--color-primary-light),
    var(--color-primary)
  );
}

.lang-divider {
  color: var(--color-text-hint);
  font-size: var(--font-size-sm);
}