/* 《始皇御罴巡北溟图》中式丹青与玄金美学样式表 */
:root {
  --bg-deep: #12100e;
  --panel-bg: rgba(22, 20, 19, 0.80);
  --panel-border: rgba(200, 150, 62, 0.52);
  --gold: #d4a650;
  --gold-bright: #f0cb7e;
  --cinnabar: #b82923;
  --cinnabar-bright: #d93b32;
  --jade: #3ca990;
  --ink-text: #f3ead8;
  --muted-text: rgba(243, 234, 216, 0.72);
  --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-kai: "STKaiti", "KaiTi", "Kaiti SC", "Noto Serif CJK SC", serif;
}

body.theme-day {
  --panel-bg: rgba(244, 236, 220, 0.84);
  --panel-border: rgba(138, 98, 38, 0.42);
  --gold: #8f6219;
  --gold-bright: #6b460b;
  --ink-text: #1c1815;
  --muted-text: rgba(32, 26, 22, 0.70);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-deep);
  font-family: var(--font-serif);
  color: var(--ink-text);
}

#scroll-stage {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  cursor: crosshair;
}

#main-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* 锦绫装裱四隅回纹角花 */
.scroll-border-frame {
  position: absolute;
  inset: 12px;
  pointer-events: none;
  border: 1px solid var(--panel-border);
  box-shadow: inset 0 0 0 3px rgba(200, 150, 62, 0.10);
  z-index: 5;
  transition: border-color 0.5s ease;
}

.corner-ornament {
  position: absolute;
  width: 34px;
  height: 34px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.8;
  opacity: 0.85;
}
.corner-tl { top: -2px; left: -2px; }
.corner-tr { top: -2px; right: -2px; transform: scaleX(-1); }
.corner-bl { bottom: -2px; left: -2px; transform: scaleY(-1); }
.corner-br { bottom: -2px; right: -2px; transform: scale(-1, -1); }

/* 右上竖排古典题识与朱砂印章 */
.colophon-panel {
  position: absolute;
  top: 32px;
  right: 36px;
  z-index: 10;
  display: flex;
  flex-direction: row-reverse;
  align-items: flex-start;
  gap: 12px;
  pointer-events: none;
  transition: color 0.4s ease;
}

.title-column {
  writing-mode: vertical-rl;
  text-orientation: upright;
  display: flex;
  align-items: center;
  gap: 10px;
}

.oval-seal {
  writing-mode: horizontal-tb;
  background: var(--cinnabar);
  color: #f6efe2;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 5px;
  border-radius: 999px;
  letter-spacing: 1px;
  line-height: 1.15;
  text-align: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

.scroll-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--ink-text);
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.12);
}

.square-seal {
  writing-mode: horizontal-tb;
  width: 34px;
  height: 34px;
  border: 2px solid var(--cinnabar);
  color: var(--cinnabar);
  font-size: 12px;
  font-weight: 700;
  display: grid;
  grid-template-columns: 1fr 1fr;
  place-items: center;
  padding: 1px;
  line-height: 1;
  border-radius: 2px;
  background: rgba(246, 238, 224, 0.15);
}

.subtitle-column {
  writing-mode: vertical-rl;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--muted-text);
  padding-top: 8px;
  line-height: 1.7;
}

/* 左上角轻提示浮签 */
.toast-banner {
  position: absolute;
  top: 30px;
  left: 34px;
  z-index: 12;
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--panel-border);
  border-left: 3px solid var(--cinnabar);
  padding: 9px 16px;
  border-radius: 4px;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--ink-text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.toast-banner.hidden {
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
}

/* 秦竹简诏书弹窗（宣诏打钱 & 帝王语录） */
.decree-modal {
  position: absolute;
  top: 13%;
  left: 50%;
  transform: translateX(-50%) scale(1);
  z-index: 20;
  max-width: min(560px, 90vw);
  width: 520px;
  background:
    repeating-linear-gradient(
      90deg,
      #dec089 0px,
      #d5b478 24px,
      #ae894b 25px,
      #e2c692 26px
    );
  color: #211811;
  border-top: 5px solid #593b1d;
  border-bottom: 5px solid #593b1d;
  border-radius: 4px;
  padding: 20px 24px 18px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45), inset 0 0 24px rgba(89, 59, 29, 0.28);
  transition: opacity 0.32s cubic-bezier(0.22, 1, 0.36, 1), transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

.decree-modal.hidden {
  opacity: 0;
  transform: translateX(-50%) scale(0.92) translateY(-12px);
  pointer-events: none;
}

/* 韦编红绳装饰 */
.decree-modal::before,
.decree-modal::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: repeating-linear-gradient(90deg, #9e241e 0 14px, #603f1d 14px 26px);
  opacity: 0.75;
}
.decree-modal::before { top: 10px; }
.decree-modal::after { bottom: 10px; }

.decree-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  border-bottom: 1px dashed rgba(68, 42, 18, 0.35);
  padding-bottom: 6px;
}

.decree-tag {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 4px;
  color: #8c1f19;
}

.decree-close {
  background: transparent;
  border: 1px solid rgba(68, 42, 18, 0.45);
  color: #3a2614;
  font-family: var(--font-serif);
  font-size: 12px;
  padding: 2px 9px;
  border-radius: 3px;
  cursor: pointer;
}
.decree-close:hover {
  background: rgba(140, 31, 25, 0.12);
}

.decree-body {
  font-family: var(--font-kai);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 1px;
  color: #1f160f;
  margin-bottom: 14px;
}

.decree-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.decree-seal {
  display: inline-block;
  border: 2px solid #b3261e;
  color: #b3261e;
  font-weight: 700;
  font-size: 12px;
  padding: 2px 6px;
  letter-spacing: 2px;
  transform: rotate(-3deg);
}

.decree-action-btn {
  background: #8f211b;
  color: #f9f1e2;
  border: 1px solid #d4a650;
  font-family: var(--font-serif);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 3px;
  letter-spacing: 1.5px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
}
.decree-action-btn:hover {
  background: #a82821;
  transform: translateY(-1px);
}

/* 底部错金控制台 */
.control-dock {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 15;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  max-width: 95vw;
}

.hint-strip {
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--muted-text);
  background: var(--panel-bg);
  backdrop-filter: blur(8px);
  padding: 4px 14px;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  white-space: nowrap;
}

.dock-bar {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--panel-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--panel-border);
  padding: 8px 14px;
  border-radius: 8px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.32);
}

@media (max-width: 1080px) {
  .dock-bar {
    flex-wrap: wrap;
  }
  .dock-divider {
    display: none;
  }
}

.dock-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dock-divider {
  width: 1px;
  height: 24px;
  background: var(--panel-border);
  margin: 0 2px;
}

.qin-btn {
  background: rgba(200, 150, 62, 0.08);
  color: var(--ink-text);
  border: 1px solid var(--panel-border);
  font-family: var(--font-serif);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 4px;
  letter-spacing: 1.5px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.qin-btn:hover {
  border-color: var(--gold);
  background: rgba(200, 150, 62, 0.20);
  transform: translateY(-1px);
}

.qin-btn:active {
  transform: translateY(0);
}

.qin-btn.active {
  background: var(--cinnabar);
  color: #f8f1e4;
  border-color: var(--gold);
  box-shadow: 0 2px 10px rgba(184, 41, 35, 0.42);
}

.qin-btn.accent {
  border-color: var(--gold);
}

.wind-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--ink-text);
  padding: 0 4px;
  white-space: nowrap;
}

.wind-control input[type="range"] {
  width: 72px;
  accent-color: var(--cinnabar);
  cursor: pointer;
}

@media (max-width: 860px) {
  .colophon-panel {
    top: 20px;
    right: 20px;
  }
  .scroll-title {
    font-size: 20px;
    letter-spacing: 4px;
  }
  .subtitle-column {
    display: none;
  }
  .hint-strip {
    display: none;
  }
  .dock-bar {
    padding: 8px 10px;
    gap: 6px;
  }
  .dock-divider {
    display: none;
  }
  .qin-btn {
    font-size: 12px;
    padding: 5px 9px;
  }
}