/* ================================
   iOS 风格导航栏 + 探索界面
   ================================ */

/* ── 导航栏 ── */

.ios-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: env(safe-area-inset-top, 12px) 16px 0;
  pointer-events: none;
}

.ios-nav-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 0 auto;
  max-width: 320px;
  background: rgba(26, 31, 24, 0.7);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border: 1px solid rgba(245, 240, 230, 0.08);
  border-radius: 999px;
  padding: 4px;
  pointer-events: auto;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: all 0.3s var(--ease-brush);
}

.ios-nav-inner.scrolled {
  background: rgba(26, 31, 24, 0.85);
  border-color: rgba(245, 240, 230, 0.12);
}

.ios-nav-tab {
  flex: 1;
  padding: 10px 24px;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.35s var(--ease-brush);
  position: relative;
  z-index: 1;
  letter-spacing: 0.1em;
  white-space: nowrap;
  text-align: center;
}

.ios-nav-tab.active {
  background: var(--accent-cinnabar);
  color: #fff;
  box-shadow: 0 4px 16px rgba(196, 90, 74, 0.3);
}

.ios-nav-sep {
  width: 1px;
  height: 20px;
  background: rgba(245, 240, 230, 0.08);
  border: none;
  flex-shrink: 0;
  padding: 0;
}

/* ── 页面容器 ── */

.page {
  display: none;
  animation: pageIn 0.5s var(--ease-brush);
}

.page.active {
  display: block;
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── 探索区域 ── */

.explore-area {
  padding: 80px 24px 100px;
  max-width: 800px;
  margin: 0 auto;
}

.explore-header {
  text-align: center;
  margin-bottom: 48px;
}

.explore-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-paper);
  margin-bottom: 12px;
}

.explore-desc {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 0.2em;
}

/* ── 探索卡片网格 ── */

.explore-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.explore-card {
  position: relative;
  background: rgba(245, 240, 230, 0.03);
  border: 1px solid rgba(245, 240, 230, 0.06);
  border-radius: 20px;
  padding: 32px 24px;
  cursor: pointer;
  transition: all 0.4s var(--ease-brush);
  overflow: hidden;
}

.explore-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% 0%, rgba(196, 90, 74, 0.08) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.explore-card:hover {
  transform: translateY(-4px);
  border-color: rgba(196, 90, 74, 0.2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.explore-card:hover::before {
  opacity: 1;
}

.explore-card:active {
  transform: scale(0.97);
}

.explore-card-icon {
  position: relative;
  font-size: 32px;
  margin-bottom: 16px;
  display: inline-block;
  transition: transform 0.4s var(--ease-brush);
}

.explore-card:hover .explore-card-icon {
  transform: scale(1.15) rotate(-3deg);
}

.explore-card h3 {
  position: relative;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-paper);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.explore-card p {
  position: relative;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 水墨刷过动画 */
.explore-card-brush {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-cinnabar);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-brush);
  opacity: 0.5;
}

.explore-card:hover .explore-card-brush {
  transform: scaleX(1);
}

/* ── 弹窗容器 ── */

.explore-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: overlayIn 0.3s ease;
}

@keyframes overlayIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.explore-modal {
  background: rgba(26, 31, 24, 0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(245, 240, 230, 0.1);
  border-radius: 24px;
  padding: 32px;
  width: 100%;
  max-width: 420px;
  position: relative;
  animation: modalIn 0.4s var(--ease-brush);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(40px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.explore-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(245, 240, 230, 0.06);
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all 0.25s ease;
}

.explore-modal-close:hover {
  background: rgba(196, 90, 74, 0.15);
  color: var(--text-paper);
}

.explore-modal h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-paper);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

/* ── 水墨画板 ── */

.ink-canvas-wrap {
  position: relative;
  border: 1px solid rgba(245, 240, 230, 0.1);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
  background: var(--bg-primary);
  touch-action: none;
}

.ink-canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 260px;
}

.ink-toolbar {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.ink-toolbar button {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(245, 240, 230, 0.1);
  background: rgba(245, 240, 230, 0.04);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 12px;
  transition: all 0.25s ease;
  letter-spacing: 0.05em;
}

.ink-toolbar button:hover {
  border-color: rgba(196, 90, 74, 0.3);
  color: var(--text-paper);
}

/* ── 诗词展示 ── */

.poem-display {
  text-align: center;
  padding: 20px 0;
}

.poem-lines {
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 2.2;
  color: var(--text-paper);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.poem-author {
  font-size: 13px;
  color: var(--accent-indigo);
  letter-spacing: 0.2em;
}

.poem-refresh {
  display: block;
  margin: 24px auto 0;
  padding: 10px 28px;
  border-radius: 999px;
  border: 1px solid rgba(245, 240, 230, 0.12);
  background: rgba(245, 240, 230, 0.04);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: all 0.25s ease;
}

.poem-refresh:hover {
  border-color: var(--accent-indigo);
  color: var(--text-paper);
}

/* ── 印章/语录 ── */

.seal-display {
  text-align: center;
  padding: 24px 0;
}

.seal-stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 120px;
  height: 120px;
  border: 3px solid var(--accent-cinnabar);
  border-radius: 12px;
  transform: rotate(-3deg);
  margin-bottom: 20px;
  color: var(--accent-cinnabar);
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.3em;
  writing-mode: vertical-rl;
  box-shadow: 0 4px 24px rgba(196, 90, 74, 0.2);
}

.seal-quote {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--text-paper);
  letter-spacing: 0.08em;
  line-height: 1.8;
  margin-bottom: 20px;
}

.seal-refresh {
  display: block;
  margin: 0 auto;
  padding: 10px 28px;
  border-radius: 999px;
  border: 1px solid rgba(245, 240, 230, 0.12);
  background: rgba(245, 240, 230, 0.04);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: all 0.25s ease;
}

.seal-refresh:hover {
  border-color: var(--accent-cinnabar);
  color: var(--text-paper);
}

/* ── 倒计时 ── */

.countdown-display {
  text-align: center;
  padding: 20px 0;
}

.countdown-time {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 600;
  color: var(--text-paper);
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  font-variant-numeric: tabular-nums;
}

.countdown-controls {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.countdown-controls button {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid rgba(245, 240, 230, 0.1);
  background: rgba(245, 240, 230, 0.04);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.05em;
  transition: all 0.25s ease;
}

.countdown-controls button:hover {
  border-color: rgba(196, 90, 74, 0.3);
  color: var(--text-paper);
}

.countdown-controls button.btn-start {
  background: var(--accent-cinnabar);
  border-color: var(--accent-cinnabar);
  color: #fff;
}

/* ── 骰子 ── */

.dice-display {
  text-align: center;
  padding: 20px 0;
}

.dice-result {
  font-size: 72px;
  margin-bottom: 16px;
  display: block;
  transition: transform 0.3s ease;
}

.dice-result.rolling {
  animation: diceShake 0.5s ease;
}

@keyframes diceShake {
  0%, 100% { transform: rotate(0deg) scale(1); }
  25% { transform: rotate(15deg) scale(1.1); }
  50% { transform: rotate(-10deg) scale(1.05); }
  75% { transform: rotate(5deg) scale(1.08); }
}

.dice-fortune {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--text-paper);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.dice-roll-btn {
  display: block;
  margin: 0 auto;
  padding: 12px 32px;
  border-radius: 999px;
  border: none;
  background: var(--accent-cinnabar);
  color: #fff;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.1em;
  transition: all 0.25s ease;
}

.dice-roll-btn:hover {
  background: #d4685a;
  transform: scale(1.05);
}

/* ── 墨色谱 ── */

.palette-display {
  padding: 8px 0;
}

.palette-color-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.palette-swatch {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  position: relative;
}

.palette-swatch:hover {
  transform: scale(1.15);
}

.palette-swatch.selected {
  border-color: var(--text-paper);
  box-shadow: 0 0 0 3px var(--bg-primary);
}

.palette-preview {
  height: 80px;
  border-radius: 12px;
  transition: background 0.3s ease;
  margin-bottom: 16px;
}

.palette-info {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* ── 响应式 ── */

@media (max-width: 640px) {
  .explore-area {
    padding: 60px 16px 80px;
  }

  .explore-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .explore-card {
    padding: 24px 16px;
  }

  .explore-card-icon {
    font-size: 26px;
    margin-bottom: 12px;
  }

  .explore-card h3 {
    font-size: 14px;
  }

  .explore-card p {
    font-size: 11px;
  }

  .explore-modal {
    padding: 24px;
    max-width: calc(100vw - 32px);
  }

  .countdown-time {
    font-size: 40px;
  }
}

@media (max-width: 400px) {
  .explore-grid {
    grid-template-columns: 1fr;
  }
}