/* ============================
   日本景点转盘 - 全局样式
   Japan Attractions Wheel - Global Styles
   ============================ */

:root {
  /* Color tokens */
  --color-bg: #0d0c14;
  --color-bg-elevated: #1a1825;
  --color-surface: rgba(255, 255, 255, 0.04);
  --color-surface-hover: rgba(255, 255, 255, 0.08);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);

  --color-text-primary: #f5f1e8;
  --color-text-secondary: #b8b3a8;
  --color-text-muted: #7a7669;

  /* Japanese aesthetic accents */
  --color-vermillion: #dc2626;     /* 朱红 - Japanese vermillion */
  --color-vermillion-deep: #991b1b;
  --color-gold: #d4af37;          /* 古典金 - antique gold */
  --color-gold-light: #f4d35e;
  --color-sumi: #1a1612;           /* 墨色 - sumi ink black */
  --color-washi: #f5f1e8;          /* 和紙色 - washi paper */
  --color-cherry: #ffb7c5;         /* 樱色 - cherry blossom */
  --color-indigo: #1e3a8a;         /* 紺 - deep indigo */

  /* Gradients */
  --gradient-bg: radial-gradient(ellipse at top, #1a1825 0%, #0d0c14 60%);
  --gradient-card: linear-gradient(135deg, rgba(220, 38, 38, 0.08) 0%, rgba(212, 175, 55, 0.04) 100%);
  --gradient-button: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
  --gradient-gold: linear-gradient(135deg, #f4d35e 0%, #d4af37 100%);

  /* Typography */
  --font-jp: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", "MS Mincho", "Noto Serif JP", "Songti SC", "STSong", "SimSun", serif;
  --font-sans: "Noto Sans SC", "Hiragino Sans", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Noto Serif JP", "Songti SC", "STSong", serif;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow-vermillion: 0 0 40px rgba(220, 38, 38, 0.3);
  --shadow-glow-gold: 0 0 30px rgba(212, 175, 55, 0.25);

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
}

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

html { scroll-behavior: smooth; }

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

/* Background pattern - subtle Japanese texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(220, 38, 38, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(212, 175, 55, 0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* Floating sakura petals animation */
.petals {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.petal {
  position: absolute;
  top: -20px;
  width: 12px;
  height: 12px;
  background: radial-gradient(circle at 30% 30%, #ffb7c5, #ff8fab);
  border-radius: 100% 0 100% 0;
  opacity: 0.6;
  animation: fall linear infinite;
}
@keyframes fall {
  0% { transform: translateY(0) rotate(0deg); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

/* ============================
   Landing page
   ============================ */
.landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  position: relative;
}

.landing__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  opacity: 0.85;
}
.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--gradient-gold);
  border-radius: var(--radius-sm);
  color: var(--color-sumi);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
}
.brand-text {
  font-family: var(--font-jp);
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--color-text-secondary);
}

.landing__header {
  text-align: center;
  margin-bottom: 64px;
  position: relative;
  z-index: 1;
}
.landing__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-jp);
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--color-gold);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.landing__eyebrow::before,
.landing__eyebrow::after {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--color-gold);
  opacity: 0.5;
}
.landing__title {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  background: linear-gradient(180deg, #f5f1e8 0%, #b8b3a8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.landing__title-jp {
  display: block;
  font-family: var(--font-jp);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 400;
  color: var(--color-vermillion);
  letter-spacing: 8px;
  margin-top: 8px;
  -webkit-text-fill-color: var(--color-vermillion);
}
.landing__subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 24px auto 0;
  line-height: 1.7;
}

.city-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
  max-width: 960px;
  width: 100%;
  position: relative;
  z-index: 1;
}

.city-card {
  position: relative;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.5s var(--ease-out), border-color 0.4s, box-shadow 0.5s;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  min-height: 460px;
}
.city-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-gold);
  box-shadow: var(--shadow-glow-gold);
}

.city-card__image {
  position: relative;
  height: 240px;
  overflow: hidden;
}
.city-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}
.city-card:hover .city-card__image img {
  transform: scale(1.06);
}
.city-card__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(13, 12, 20, 0.7) 100%);
}
.city-card__kicker {
  position: absolute;
  top: 16px;
  left: 16px;
  font-family: var(--font-jp);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--color-washi);
  background: rgba(220, 38, 38, 0.85);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(10px);
  z-index: 1;
}

.city-card__body {
  padding: 32px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.city-card__name {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.city-card__name-jp {
  font-family: var(--font-jp);
  font-size: 16px;
  color: var(--color-gold);
  letter-spacing: 6px;
  margin-bottom: 16px;
}
.city-card__desc {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 24px;
  flex: 1;
}
.city-card__meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.city-card__meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.city-card__cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}
.city-card__cta-text {
  font-family: var(--font-jp);
  font-size: 15px;
  letter-spacing: 2px;
  color: var(--color-text-primary);
}
.city-card__cta-arrow {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--gradient-button);
  display: grid;
  place-items: center;
  color: var(--color-washi);
  transition: transform 0.4s var(--ease-out);
}
.city-card:hover .city-card__cta-arrow {
  transform: translateX(4px);
}

.landing__footer {
  margin-top: 48px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-jp);
  letter-spacing: 2px;
}

/* ============================
   Wheel page
   ============================ */
.wheel-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 24px;
  position: relative;
}

.wheel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  position: relative;
  z-index: 2;
  flex-wrap: wrap;
  gap: 16px;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-jp);
  font-size: 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 10px 18px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  transition: all 0.3s;
  background: var(--color-surface);
  backdrop-filter: blur(10px);
}
.back-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.wheel-title {
  text-align: center;
  flex: 1;
  min-width: 200px;
}
.wheel-title__city {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(180deg, #f5f1e8 0%, #d4af37 200%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.02em;
}
.wheel-title__jp {
  display: block;
  font-family: var(--font-jp);
  font-size: 14px;
  letter-spacing: 8px;
  color: var(--color-vermillion);
  margin-top: 4px;
  -webkit-text-fill-color: var(--color-vermillion);
}
.wheel-title__count {
  font-family: var(--font-jp);
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 4px;
  margin-top: 4px;
}

.wheel-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 20px;
  min-height: 600px;
}

.wheel-container {
  position: relative;
  width: min(560px, 90vw);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}

/* Outer glow */
.wheel-container::before {
  content: '';
  position: absolute;
  inset: -24px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, rgba(220, 38, 38, 0.15) 0%, transparent 70%);
  pointer-events: none;
  animation: pulse 3s var(--ease-in-out) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.wheel-pointer {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5));
  pointer-events: none;
}
.wheel-pointer svg {
  display: block;
}

.wheel-canvas-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  overflow: hidden;
  box-shadow:
    0 0 0 8px var(--color-bg-elevated),
    0 0 0 10px var(--color-gold),
    0 0 0 18px var(--color-bg-elevated),
    0 0 0 20px rgba(212, 175, 55, 0.4),
    0 30px 80px rgba(0, 0, 0, 0.6);
}

#wheelCanvas {
  display: block;
  width: 100%;
  height: 100%;
  transition: transform 5.5s var(--ease-out);
  transform-origin: center center;
}

.wheel-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 110px;
  height: 110px;
  border-radius: var(--radius-full);
  background: var(--gradient-gold);
  display: grid;
  place-items: center;
  cursor: pointer;
  z-index: 5;
  box-shadow:
    0 8px 32px rgba(212, 175, 55, 0.4),
    inset 0 -4px 0 rgba(0, 0, 0, 0.2);
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-sumi);
  font-size: 18px;
  letter-spacing: 0.05em;
  text-align: center;
  line-height: 1.1;
  border: 4px solid var(--color-bg-elevated);
}
.wheel-center:hover {
  transform: translate(-50%, -50%) scale(1.06);
  box-shadow:
    0 12px 40px rgba(212, 175, 55, 0.6),
    inset 0 -4px 0 rgba(0, 0, 0, 0.2);
}
.wheel-center:active {
  transform: translate(-50%, -50%) scale(0.97);
}
.wheel-center.is-spinning {
  pointer-events: none;
  opacity: 0.7;
}
.wheel-center small {
  display: block;
  font-size: 10px;
  letter-spacing: 2px;
  opacity: 0.7;
  margin-top: 2px;
  font-weight: 400;
}

.wheel-controls {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  position: relative;
  z-index: 2;
  flex-wrap: wrap;
  justify-content: center;
}
.spin-btn {
  font-family: var(--font-jp);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 4px;
  padding: 14px 36px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--gradient-button);
  color: var(--color-washi);
  cursor: pointer;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s;
  box-shadow: 0 8px 24px rgba(220, 38, 38, 0.4);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.spin-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(220, 38, 38, 0.5);
}
.spin-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.secondary-btn {
  font-family: var(--font-jp);
  font-size: 14px;
  letter-spacing: 2px;
  padding: 14px 24px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(10px);
}
.secondary-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* ============================
   Result modal
   ============================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(13, 12, 20, 0.85);
  backdrop-filter: blur(20px);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
}
.modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  max-width: 720px;
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.92) translateY(20px);
  transition: transform 0.5s var(--ease-spring);
  box-shadow: var(--shadow-lg);
}
.modal-backdrop.is-open .modal {
  transform: scale(1) translateY(0);
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--color-border);
  color: var(--color-washi);
  display: grid;
  place-items: center;
  cursor: pointer;
  z-index: 2;
  transition: all 0.3s;
  font-size: 20px;
}
.modal__close:hover {
  background: var(--color-vermillion);
  border-color: var(--color-vermillion);
  transform: rotate(90deg);
}

.modal__image {
  position: relative;
  height: 320px;
  overflow: hidden;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}
.modal__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.modal__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(26, 24, 37, 0.95) 100%);
}
.modal__result-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(220, 38, 38, 0.95);
  border-radius: var(--radius-full);
  font-family: var(--font-jp);
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--color-washi);
  z-index: 1;
}
.modal__result-badge::before {
  content: '✦';
  color: var(--color-gold-light);
}

.modal__body {
  padding: 32px;
  position: relative;
}
.modal__icon {
  position: absolute;
  top: -60px;
  left: 32px;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  background: var(--gradient-gold);
  display: grid;
  place-items: center;
  font-size: 40px;
  box-shadow: var(--shadow-md);
  border: 4px solid var(--color-bg-elevated);
}

.modal__name {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.modal__name-en {
  font-family: var(--font-jp);
  font-size: 14px;
  color: var(--color-gold);
  letter-spacing: 4px;
  margin-bottom: 12px;
}
.modal__tagline {
  font-family: var(--font-jp);
  font-size: 18px;
  color: var(--color-vermillion);
  letter-spacing: 2px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}
.modal__tagline::before {
  content: '「';
  color: var(--color-gold);
  margin-right: 4px;
}
.modal__tagline::after {
  content: '」';
  color: var(--color-gold);
  margin-left: 4px;
}

.modal__description {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text-primary);
  margin-bottom: 28px;
}

.modal__info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.info-item__label {
  font-family: var(--font-jp);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--color-gold);
  text-transform: uppercase;
}
.info-item__value {
  font-size: 14px;
  color: var(--color-text-primary);
  line-height: 1.4;
}

.modal__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.tag {
  font-family: var(--font-jp);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  letter-spacing: 2px;
}

.modal__tips {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.08), rgba(220, 38, 38, 0.04));
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin-bottom: 28px;
}
.modal__tips-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-jp);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--color-gold);
  margin-bottom: 8px;
}
.modal__tips-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-primary);
}

.modal__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.modal__actions .spin-btn,
.modal__actions .secondary-btn {
  flex: 1;
  justify-content: center;
  min-width: 160px;
}

/* ============================
   Confetti / result celebration
   ============================ */
.celebration {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 99;
  overflow: hidden;
}
.celebration span {
  position: absolute;
  top: -20px;
  width: 10px;
  height: 16px;
  opacity: 0;
  animation: confetti-fall 2.5s linear forwards;
}
@keyframes confetti-fall {
  0% { transform: translateY(0) rotate(0); opacity: 1; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 640px) {
  .landing__title { font-size: 40px; }
  .landing__title-jp { font-size: 18px; letter-spacing: 4px; }
  .city-card { min-height: 380px; }
  .city-card__image { height: 180px; }
  .city-card__body { padding: 24px 20px; }
  .city-card__name { font-size: 28px; }

  .wheel-page { padding: 16px; }
  .wheel-stage { padding: 12px; min-height: 480px; }
  .wheel-center { width: 90px; height: 90px; font-size: 15px; }
  .wheel-title__city { font-size: 24px; }

  .modal__image { height: 220px; }
  .modal__body { padding: 24px 20px; }
  .modal__name { font-size: 28px; }
  .modal__icon { width: 64px; height: 64px; font-size: 32px; top: -48px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Selection color */
::selection {
  background: var(--color-vermillion);
  color: var(--color-washi);
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border-strong); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-gold); }