/* ═══════ 梅花易数 v5.0 — 四主题系统 ═══════ */

/* ─── 主题1：清雅白（默认）─── */
body[data-theme="light"] {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F7FA;
  --bg-card: #FFFFFF;
  --bg-hover: #EEF1F5;
  --bg-input: #F8FAFC;
  --primary: #1E3A8A;
  --primary-light: #3B82F6;
  --primary-lighter: #EFF6FF;
  --primary-glow: rgba(30,58,138,0.08);
  --accent: #EA580C;
  --accent-light: #F97316;
  --accent-glow: rgba(234,88,12,0.12);
  --yao-dark: #1E293B;
  --text-heading: #0F172A;
  --text-body: #334155;
  --text-light: #64748B;
  --text-muted: #94A3B8;
  --success: #059669;
  --warning: #D97706;
  --danger: #DC2626;
  --info: #2563EB;
  --border: #CBD5E1;
  --border-light: #E2E8F0;
  --card-shadow: 0 2px 12px rgba(0,0,0,0.06);
  --hero-glow: linear-gradient(135deg, #1E3A8A 0%, #3B82F6 100%);
  --hero-text: #FFFFFF;
  --method-active-bg: #EFF6FF;
  --method-active-border: #3B82F6;
  --dim-title-color: #1E3A8A;
  --footer-color: rgba(100,116,139,0.5);
}

/* ─── 主题2：暗夜玄（暗黑神秘风）─── */
body[data-theme="dark"] {
  --bg-primary: #080c1a;
  --bg-secondary: #0d1230;
  --bg-card: rgba(20,24,56,0.8);
  --bg-hover: rgba(30,36,70,0.8);
  --bg-input: rgba(255,255,255,0.04);
  --primary: #d0aa64;
  --primary-light: #e8c9a0;
  --primary-lighter: rgba(208,170,100,0.08);
  --primary-glow: rgba(208,170,100,0.12);
  --accent: #c9a44d;
  --accent-light: #e0c58f;
  --accent-glow: rgba(208,170,100,0.2);
  --yao-dark: #d0aa64;
  --text-heading: #e8dcc4;
  --text-body: #c4b99a;
  --text-light: #998a6a;
  --text-muted: #6a5e4a;
  --success: #3ba878;
  --warning: #d4a544;
  --danger: #d46454;
  --info: #5b8ec8;
  --border: rgba(208,170,100,0.18);
  --border-light: rgba(208,170,100,0.1);
  --card-shadow: 0 4px 20px rgba(0,0,0,0.4);
  --hero-glow: linear-gradient(135deg, #1a0f3a 0%, #2a1548 50%, #0d1230 100%);
  --hero-text: #e8dcc4;
  --method-active-bg: rgba(208,170,100,0.12);
  --method-active-border: #d0aa64;
  --dim-title-color: #d0aa64;
  --footer-color: rgba(208,170,100,0.3);
}

/* ─── 主题3：古卷暖（暖调古卷风）─── */
body[data-theme="warm"] {
  --bg-primary: #faf3e4;
  --bg-secondary: #f5e8d0;
  --bg-card: rgba(255,248,235,0.9);
  --bg-hover: rgba(240,220,190,0.7);
  --bg-input: rgba(255,248,235,0.8);
  --primary: #8B4513;
  --primary-light: #A0522D;
  --primary-lighter: rgba(139,69,19,0.06);
  --primary-glow: rgba(139,69,19,0.08);
  --accent: #D2691E;
  --accent-light: #E8903C;
  --accent-glow: rgba(210,105,30,0.15);
  --yao-dark: #5C3317;
  --text-heading: #3E1F0D;
  --text-body: #5C3A1E;
  --text-light: #8B6914;
  --text-muted: #A0855B;
  --success: #5B8C3E;
  --warning: #C08500;
  --danger: #B8403A;
  --info: #6B4E31;
  --border: rgba(139,69,19,0.18);
  --border-light: rgba(139,69,19,0.08);
  --card-shadow: 0 3px 16px rgba(139,69,19,0.08);
  --hero-glow: linear-gradient(135deg, #5C3317 0%, #8B4513 50%, #5C2E0A 100%);
  --hero-text: #faf3e4;
  --method-active-bg: rgba(139,69,19,0.08);
  --method-active-border: #8B4513;
  --dim-title-color: #8B4513;
  --footer-color: rgba(139,69,19,0.35);
}

/* ─── 主题4：赛博光（赛博玄学风）─── */
body[data-theme="cyber"] {
  --bg-primary: #060510;
  --bg-secondary: #0a0818;
  --bg-card: rgba(15,12,30,0.85);
  --bg-hover: rgba(25,20,50,0.8);
  --bg-input: rgba(255,255,255,0.03);
  --primary: #00d4ff;
  --primary-light: #40e0ff;
  --primary-lighter: rgba(0,212,255,0.06);
  --primary-glow: rgba(0,212,255,0.15);
  --accent: #ff3da8;
  --accent-light: #ff6fc8;
  --accent-glow: rgba(255,61,168,0.2);
  --yao-dark: #d0aa64;
  --text-heading: #e0e8ff;
  --text-body: #b0b8d0;
  --text-light: #7880a0;
  --text-muted: #505878;
  --success: #00e898;
  --warning: #ffb840;
  --danger: #ff4a5e;
  --info: #40a0ff;
  --border: rgba(0,212,255,0.15);
  --border-light: rgba(0,212,255,0.06);
  --card-shadow: 0 4px 24px rgba(0,0,0,0.5), 0 0 40px rgba(0,212,255,0.05);
  --hero-glow: linear-gradient(135deg, #0a0020 0%, #150030 50%, #0a0028 100%);
  --hero-text: #e0e8ff;
  --method-active-bg: rgba(0,212,255,0.08);
  --method-active-border: #00d4ff;
  --dim-title-color: #ff3da8;
  --footer-color: rgba(0,212,255,0.25);
}

/* ═══════ 实际样式应用 ═══════ */
body {
  background: var(--bg-primary);
  color: var(--text-body);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Serif SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.8;
  min-height: 100vh;
  transition: background 0.5s ease, color 0.5s ease;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* 头部 */
.header {
  text-align: center;
  padding: 40px 0 32px;
  border-bottom: 2px solid var(--border-light);
  margin-bottom: 28px;
}

.header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.header .subtitle {
  color: var(--text-light);
  font-size: 0.95rem;
}

.bagua-symbols {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 14px;
  font-size: 1.3rem;
  color: var(--text-muted);
  transition: color 0.5s ease;
}

/* 区域标题 */
.section h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.section h2 .required {
  color: var(--danger);
  font-size: 0.78rem;
  font-weight: 500;
}

/* ═══ 起卦方式按钮 ═══ */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.method-btn {
  padding: 14px 8px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-body);
}

.method-btn:hover {
  border-color: var(--primary-light);
  background: var(--bg-hover);
  transform: translateY(-1px);
  box-shadow: var(--card-shadow);
}

.method-btn.active {
  background: var(--method-active-bg);
  border-color: var(--method-active-border);
  color: var(--primary);
  font-weight: 600;
  box-shadow: var(--card-shadow);
}

.method-btn .icon {
  font-size: 1.4rem;
}

.method-btn .label {
  font-weight: 500;
}

/* ═══ 占测场景按钮 ═══ */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.scene-btn {
  padding: 14px 8px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.88rem;
  color: var(--text-body);
}

.scene-btn:hover {
  border-color: var(--accent-light);
  background: var(--bg-hover);
  transform: translateY(-1px);
}

.scene-btn.active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.scene-btn .icon {
  font-size: 1.5rem;
}

/* ═══ 输入区域 ═══ */
.input-area {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.input-area input {
  width: 100%;
  padding: 14px 18px;
  font-size: 1rem;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 10px;
  color: var(--text-body);
  outline: none;
  transition: all 0.25s ease;
  font-family: inherit;
}

.input-area input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
  background: var(--bg-card);
}

.input-area input::placeholder {
  color: var(--text-muted);
}

/* 占卜按钮 */
.divine-btn {
  width: 100%;
  padding: 16px;
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--hero-glow);
  color: var(--hero-text);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 4px;
  font-family: inherit;
  box-shadow: var(--card-shadow);
}

.divine-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.divine-btn:active {
  transform: scale(0.98);
}

/* 错误消息 */
.error-msg {
  color: var(--danger);
  text-align: center;
  font-size: 0.88rem;
  margin-top: 8px;
}

.hidden {
  display: none;
}

/* ═══ 主题选择器 ═══ */
.theme-selector {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 9999;
}

.theme-selector select {
  padding: 6px 32px 6px 12px;
  font-size: 12px;
  font-family: inherit;
  background: var(--bg-card);
  color: var(--text-body);
  border: 1px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3e%3cpath fill='%23666' d='M6 8L1 3h10z'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
  letter-spacing: 0.5px;
}

.theme-selector select:hover {
  border-color: var(--primary-light);
}

.theme-selector select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* 适配移动端 */
@media (max-width: 480px) {
  .container { padding: 16px 14px; }
  .method-grid, .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .header { padding: 24px 0 20px; }
  .header h1 { font-size: 1.5rem; }
  .theme-selector { top: 8px; right: 8px; }
  .theme-selector select { font-size: 11px; padding: 4px 28px 4px 8px; }
}