/* ============================================================
 *  Destiny Bias · v5 UI 样式
 *  - 全身宣纸背景
 *  - 朱砂色印章
 *  - 竖排宋体
 *  - 对话气泡
 *  - 选项按钮
 *  - 卦象缩略图
 * ============================================================ */

/* ========== 全局变量 ========== */
:root {
  --paper-cream: #f5ecd0;
  --paper-light: #faf3df;
  --paper-dark: #e8dcc0;
  --ink-dark: #3a2a1a;
  --ink-mid: #5a4030;
  --ink-light: #8a7050;
  --seal-red: #b41e1e;
  --seal-deep: #8b1414;
  --seal-light: #d44040;
  --gold: #8a6a3a;
  --shadow: rgba(60, 30, 10, 0.15);
}

/* ========== 全身宣纸背景 ========== */
body.v5 {
  background-color: var(--paper-cream);
  background-image:
    /* 几道朱砂晕染 */
    radial-gradient(ellipse 600px 400px at 15% 25%, rgba(180, 30, 30, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 500px 350px at 85% 65%, rgba(180, 30, 30, 0.05) 0%, transparent 70%),
    radial-gradient(ellipse 800px 500px at 50% 90%, rgba(180, 30, 30, 0.04) 0%, transparent 70%),
    /* 几处墨点 */
    radial-gradient(circle 3px at 22% 18%, rgba(60, 40, 30, 0.12) 50%, transparent 100%),
    radial-gradient(circle 2px at 78% 30%, rgba(60, 40, 30, 0.10) 50%, transparent 100%),
    radial-gradient(circle 2.5px at 65% 80%, rgba(60, 40, 30, 0.10) 50%, transparent 100%),
    /* 宣纸纹理(noise) */
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' seed='5'/><feColorMatrix values='0 0 0 0 0.4   0 0 0 0 0.3   0 0 0 0 0.2   0 0 0 0.04 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  background-attachment: fixed;
  color: var(--ink-dark);
  font-family: 'Songti SC', 'STSong', 'KaiTi', '楷体', serif;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  line-height: 1.85;
}

/* ========== 顶部导航栏 ========== */
.v5-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: linear-gradient(180deg, rgba(245, 236, 208, 0.95) 0%, rgba(245, 236, 208, 0.7) 100%);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--paper-dark);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--ink-mid);
}

.v5-header .title {
  font-size: 18px;
  color: var(--ink-dark);
  font-weight: bold;
  letter-spacing: 4px;
}

/* ========== 主容器 ========== */
.v5-main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 24px 120px;
}

/* ========== 印章(缘) ========== */
.stamp {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--seal-red);
  color: var(--paper-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'STKaiti', 'KaiTi', '楷体', serif;
  font-size: 28px;
  font-weight: bold;
  border-radius: 4px;
  position: relative;
  box-shadow:
    0 2px 6px rgba(180, 30, 30, 0.3),
    inset 0 0 0 2px rgba(245, 236, 208, 0.15);
  /* 印章不规则边缘 */
  background-image: linear-gradient(45deg, transparent 49%, rgba(0, 0, 0, 0.08) 49% 51%, transparent 51%);
}

/* 印章入场动画 */
.stamp-enter {
  animation: stampEnter 0.6s ease-out;
}
@keyframes stampEnter {
  0%   { transform: scale(2.5) rotate(-25deg); opacity: 0; }
  60%  { transform: scale(0.9) rotate(3deg);  opacity: 1; }
  100% { transform: scale(1)   rotate(0);     opacity: 1; }
}

.stamp-large {
  width: 72px;
  height: 72px;
  font-size: 40px;
  margin: 0 auto;
}

/* ========== 对话气泡 ========== */
.msg {
  display: flex;
  gap: 14px;
  margin: 22px 0;
  align-items: flex-start;
  animation: msgIn 0.3s ease-out;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg-yuan { flex-direction: row; }
.msg-user { flex-direction: row-reverse; }

.bubble {
  max-width: calc(100% - 80px);
  padding: 14px 18px;
  background: var(--paper-light);
  border-left: 3px solid var(--seal-red);
  font-size: 17px;
  line-height: 1.9;
  color: var(--ink-dark);
  box-shadow: 0 2px 6px var(--shadow);
  position: relative;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.msg-user .bubble {
  background: rgba(220, 200, 170, 0.5);
  border-left: none;
  border-right: 3px solid var(--ink-light);
  color: var(--ink-mid);
  font-size: 16px;
}

/* 爻线/卦象气泡(特殊) */
.bubble.hex {
  background: var(--paper-light);
  border-left: 3px solid var(--gold);
  padding: 18px 20px;
}

/* 过渡气泡 */
.bubble.transition {
  background: linear-gradient(135deg, var(--paper-light) 0%, var(--paper-dark) 100%);
  border-left: 3px solid var(--ink-mid);
  font-style: italic;
}

/* ========== 选项按钮 ========== */
.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 24px 0 24px 62px;
  animation: msgIn 0.4s ease-out;
}

.option-btn {
  background: var(--paper-light);
  border: 1px solid var(--paper-dark);
  border-left: 3px solid var(--seal-red);
  padding: 14px 20px;
  font-family: inherit;
  font-size: 16px;
  color: var(--ink-dark);
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.7;
}
.option-btn:hover {
  background: rgba(180, 30, 30, 0.05);
  border-left-color: var(--seal-deep);
  transform: translateX(2px);
}
.option-btn:active {
  background: rgba(180, 30, 30, 0.1);
}
.option-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.option-btn .label {
  display: inline-block;
  color: var(--seal-red);
  font-weight: bold;
  margin-right: 12px;
  font-family: 'STKaiti', 'KaiTi', serif;
}

/* ========== 卦象显示区 ========== */
.hex-display {
  text-align: center;
  margin: 32px 0;
  padding: 20px;
  background: var(--paper-light);
  border: 1px solid var(--paper-dark);
  position: relative;
  animation: msgIn 0.6s ease-out;
}

.hex-display .symbol {
  font-size: 56px;
  color: var(--ink-dark);
  letter-spacing: 8px;
  margin: 8px 0;
  font-family: monospace;
}

.hex-display .name {
  font-size: 24px;
  color: var(--seal-red);
  font-weight: bold;
  letter-spacing: 6px;
  margin: 6px 0;
}

.hex-display .title-text {
  font-size: 14px;
  color: var(--ink-mid);
  margin: 4px 0;
  letter-spacing: 2px;
}

.hex-display .modern {
  font-size: 13px;
  color: var(--ink-light);
  margin: 12px 0 6px;
  font-style: italic;
}

.hex-display .reading {
  font-size: 16px;
  color: var(--ink-dark);
  margin: 12px 0;
  white-space: pre-wrap;
  line-height: 1.85;
}

/* 卦象旋转入场 */
.hex-display.entering {
  animation: hexEnter 1.5s ease-out;
}
@keyframes hexEnter {
  0%   { transform: rotate(-360deg) scale(0.3); opacity: 0; }
  100% { transform: rotate(0)      scale(1);   opacity: 1; }
}

/* ========== 顶部缩略卦象(常驻) ========== */
.hex-thumb {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 4px 12px;
  background: rgba(245, 236, 208, 0.6);
  border: 1px solid var(--paper-dark);
  border-radius: 4px;
  font-size: 14px;
  color: var(--ink-mid);
}
.hex-thumb .name {
  color: var(--seal-red);
  font-weight: bold;
  font-size: 16px;
}
.hex-thumb .symbol {
  font-size: 14px;
  letter-spacing: 2px;
  font-family: monospace;
  color: var(--ink-dark);
}

/* ========== 阶段进度条 ========== */
.stage-progress {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-light);
  letter-spacing: 2px;
}
.stage-progress .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--paper-dark);
}
.stage-progress .dot.active {
  background: var(--seal-red);
  box-shadow: 0 0 6px var(--seal-light);
}
.stage-progress .dot.done {
  background: var(--ink-mid);
}

/* ========== 输入框区 ========== */
.input-area {
  text-align: center;
  padding: 80px 20px;
}
.input-area h2 {
  color: var(--ink-dark);
  font-size: 32px;
  margin: 0 0 8px;
  letter-spacing: 6px;
}
.input-area .sub {
  color: var(--ink-light);
  font-size: 15px;
  margin: 0 0 32px;
  letter-spacing: 2px;
}

.name-input {
  font-family: inherit;
  font-size: 24px;
  padding: 14px 24px;
  border: 1px solid var(--paper-dark);
  background: var(--paper-light);
  color: var(--ink-dark);
  width: 280px;
  text-align: center;
  letter-spacing: 4px;
  outline: none;
  transition: all 0.2s;
}
.name-input:focus {
  border-color: var(--seal-red);
  box-shadow: 0 0 0 3px rgba(180, 30, 30, 0.1);
}

.confirm-btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 36px;
  background: var(--seal-red);
  color: var(--paper-cream);
  border: none;
  font-family: inherit;
  font-size: 16px;
  letter-spacing: 4px;
  cursor: pointer;
  transition: all 0.2s;
}
.confirm-btn:hover {
  background: var(--seal-deep);
}
.confirm-btn:disabled {
  background: var(--ink-light);
  cursor: not-allowed;
}

/* ========== 重抽按钮 ========== */
.reroll-btn {
  background: transparent;
  border: 1px solid var(--paper-dark);
  color: var(--ink-mid);
  padding: 4px 12px;
  font-size: 12px;
  font-family: inherit;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.2s;
}
.reroll-btn:hover {
  border-color: var(--seal-red);
  color: var(--seal-red);
}

/* ========== 终章按钮 ========== */
.end-actions {
  text-align: center;
  margin: 40px 0;
  padding: 20px;
  background: var(--paper-light);
  border: 1px solid var(--paper-dark);
}
.end-actions .gen-btn {
  display: inline-block;
  padding: 14px 40px;
  background: var(--seal-red);
  color: var(--paper-cream);
  border: none;
  font-family: inherit;
  font-size: 18px;
  letter-spacing: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.end-actions .gen-btn:hover {
  background: var(--seal-deep);
  transform: translateY(-1px);
}
.end-actions .gen-btn:disabled {
  background: var(--ink-light);
  cursor: not-allowed;
}

/* ========== 滚动条样式(让宣纸感更统一) ========== */
::-webkit-scrollbar {
  width: 8px;
  background: var(--paper-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--ink-light);
  border-radius: 4px;
}

/* ========== 响应式 ========== */
@media (max-width: 600px) {
  .v5-main { padding: 20px 16px 100px; }
  .bubble { font-size: 16px; padding: 12px 14px; }
  .stamp { width: 40px; height: 40px; font-size: 24px; }
  .options { margin-left: 54px; }
  .hex-display .symbol { font-size: 40px; letter-spacing: 4px; }
}

/* ========== 声音按钮 ========== */
.audio-btn {
  background: transparent;
  border: 1px solid var(--paper-dark);
  color: var(--ink-mid);
  padding: 4px 10px;
  font-size: 14px;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s;
  font-family: inherit;
}
.audio-btn:hover { border-color: var(--seal-red); color: var(--seal-red); }
.audio-btn.active { color: var(--seal-red); border-color: var(--seal-red); }

/* ========== 四维卡 ========== */
.dim-slot {
  margin: 24px 0;
  padding: 16px;
  background: var(--paper-light);
  border: 1px solid var(--paper-dark);
  position: relative;
  animation: msgIn 0.5s ease-out;
}
.dim-slot::before {
  content: '偏置四维';
  position: absolute;
  top: -10px;
  left: 16px;
  background: var(--paper-cream);
  padding: 0 10px;
  font-size: 12px;
  color: var(--seal-red);
  letter-spacing: 4px;
}

.dim-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 8px;
}

.dim-card {
  background: var(--paper-light);
  border-left: 3px solid var(--seal-red);
  padding: 14px 12px;
  text-align: center;
  opacity: 0;
  transform: translateY(8px);
  animation: dimCardIn 0.4s ease-out forwards;
}

.dim-card:nth-child(1) { animation-delay: 0ms; }
.dim-card:nth-child(2) { animation-delay: 500ms; }
.dim-card:nth-child(3) { animation-delay: 1000ms; }
.dim-card:nth-child(4) { animation-delay: 1500ms; }

@keyframes dimCardIn {
  to { opacity: 1; transform: translateY(0); }
}

.dim-card .dim-name {
  font-size: 18px;
  color: var(--seal-red);
  letter-spacing: 4px;
  margin-bottom: 6px;
  font-weight: bold;
}

.dim-card .dim-divider {
  height: 1px;
  background: var(--paper-dark);
  margin: 8px 0;
}

.dim-card .dim-value {
  font-size: 28px;
  color: var(--ink-dark);
  font-weight: bold;
  margin: 6px 0;
  font-family: 'Georgia', serif;
}

.dim-card .dim-value.up { color: var(--seal-red); }
.dim-card .dim-value.down { color: #5a7a8a; }

.dim-card .dim-hint {
  font-size: 12px;
  color: var(--ink-light);
  line-height: 1.6;
  margin: 8px 0;
  min-height: 60px;
}

.dim-card .dim-direction {
  font-size: 13px;
  letter-spacing: 2px;
  margin-top: 4px;
}
.dim-card .dim-direction.up { color: var(--seal-red); }
.dim-card .dim-direction.down { color: #5a7a8a; }

/* ========== 走向选择(沿用 options 样式) ========== */
.trajectory-intro {
  text-align: center;
  color: var(--ink-mid);
  font-size: 14px;
  letter-spacing: 4px;
  margin: 20px 0 8px;
  padding-top: 12px;
  border-top: 1px dashed var(--paper-dark);
}

/* ========== 命运长图内嵌显示 ========== */
.manga-result {
  margin: 24px 0;
  background: var(--paper-light);
  border: 1px solid var(--paper-dark);
  padding: 12px;
  animation: msgIn 0.5s ease-out;
}

.manga-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px 12px;
  border-bottom: 1px dashed var(--paper-dark);
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--ink-mid);
  letter-spacing: 2px;
}

.manga-download {
  display: inline-block;
  padding: 4px 14px;
  background: var(--seal-red);
  color: var(--paper-cream);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 2px;
  border-radius: 4px;
  transition: background 0.2s;
}
.manga-download:hover {
  background: var(--seal-deep);
  color: var(--paper-cream);
}

.manga-img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  box-shadow: 0 2px 8px var(--shadow);
}

/* ========== 移动端响应 ========== */
@media (max-width: 700px) {
  .dim-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========== 信笺(终章最终产物) ========== */
.letter-card {
  position: relative;
  margin: 32px auto 24px;
  max-width: 640px;
  padding: 56px 56px 44px;
  background:
    radial-gradient(ellipse 320px 220px at 15% 18%, rgba(180, 30, 30, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 280px 200px at 85% 80%, rgba(180, 30, 30, 0.04) 0%, transparent 70%),
    linear-gradient(180deg, #faf3df 0%, #f5ecd0 100%);
  border: 1px solid var(--paper-dark);
  font-family: 'Songti SC', 'STSong', 'KaiTi', '楷体', serif;
  color: var(--ink-dark);
  box-shadow:
    0 4px 20px rgba(60, 30, 10, 0.18),
    inset 0 0 0 1px rgba(245, 236, 208, 0.4);
  animation: letterIn 1.2s ease-out;
  /* 宣纸纹理 */
  background-image:
    radial-gradient(ellipse 320px 220px at 15% 18%, rgba(180, 30, 30, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 280px 200px at 85% 80%, rgba(180, 30, 30, 0.04) 0%, transparent 70%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' seed='3'/><feColorMatrix values='0 0 0 0 0.4   0 0 0 0 0.3   0 0 0 0 0.2   0 0 0 0.05 0'/></filter><rect width='240' height='240' filter='url(%23n)'/></svg>"),
    linear-gradient(180deg, #faf3df 0%, #f5ecd0 100%);
}

.letter-card[data-mood="吉"] {
  border-color: rgba(180, 100, 60, 0.45);
  box-shadow:
    0 4px 20px rgba(180, 100, 60, 0.18),
    inset 0 0 0 1px rgba(180, 100, 60, 0.1);
}
.letter-card[data-mood="涩"] {
  border-color: rgba(90, 60, 50, 0.5);
  box-shadow:
    0 4px 20px rgba(60, 30, 10, 0.22),
    inset 0 0 0 1px rgba(90, 60, 50, 0.1);
}
.letter-card[data-mood="中"] {
  border-color: var(--paper-dark);
}

@keyframes letterIn {
  0%   { opacity: 0; transform: translateY(14px) scale(0.98); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* 四角印章 */
.letter-corner {
  position: absolute;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'STKaiti', 'KaiTi', '楷体', serif;
  font-size: 18px;
  color: var(--seal-red);
  border: 1.5px solid var(--seal-red);
  background: rgba(180, 30, 30, 0.06);
  letter-spacing: 0;
  opacity: 0.85;
}
.letter-corner.top-left    { top: 14px; left: 14px; }
.letter-corner.top-right   { top: 14px; right: 14px; }
.letter-corner.bottom-left { bottom: 14px; left: 14px; }
.letter-corner.bottom-right{ bottom: 14px; right: 14px; }

/* 抬头 */
.letter-salu {
  font-size: 18px;
  letter-spacing: 4px;
  color: var(--seal-deep);
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(180, 30, 30, 0.3);
}

/* 主体 */
.letter-body {
  font-size: 17px;
  line-height: 2.0;
  color: var(--ink-dark);
  letter-spacing: 1.5px;
  text-align: justify;
  margin-bottom: 26px;
  min-height: 200px;
}
.letter-body br { display: block; content: ""; margin-top: 0.4em; }

/* 元信息(卦象 + 底色) */
.letter-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 14px;
  background: rgba(245, 236, 208, 0.5);
  border-left: 2px solid var(--ink-light);
  font-size: 13px;
  color: var(--ink-mid);
  letter-spacing: 1.5px;
  margin-bottom: 18px;
}
.letter-hex {
  color: var(--seal-red);
  font-weight: bold;
}
.letter-mood {
  color: var(--ink-mid);
}

/* 落款 */
.letter-signoff {
  text-align: right;
  font-size: 15px;
  color: var(--ink-mid);
  letter-spacing: 3px;
  margin-top: 8px;
  margin-bottom: 18px;
  padding-right: 6px;
}

/* 脚注 */
.letter-foot {
  text-align: center;
  font-size: 11px;
  color: var(--ink-light);
  letter-spacing: 2px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--paper-dark);
  font-style: italic;
}

/* 兜底 */
.letter-fallback {
  margin: 24px 0;
  padding: 18px;
  text-align: center;
  background: var(--paper-light);
  border: 1px dashed var(--paper-dark);
  color: var(--ink-light);
  font-size: 14px;
  letter-spacing: 2px;
}

@media (max-width: 700px) {
  .letter-card {
    padding: 44px 22px 32px;
    margin: 22px 4px 18px;
  }
  .letter-corner { width: 24px; height: 24px; font-size: 14px; }
  .letter-salu { font-size: 16px; }
  .letter-body { font-size: 15px; line-height: 1.95; }
}