/* ============================================================
 * poster.css —— 海报版式
 * 所有颜色来自 CSS 变量，由 theme.js 注入
 * ============================================================ */

:root {
  --c-main: #1B3A5C;
  --c-main-dark: #0E2033;
  --c-light: #E8EDF2;
  --c-accent: #B08A3E;
  --c-bg: #FFFFFF;
  --c-text: #1A1A1A;
  --c-muted: #5A6570;
  --c-line: #DCE2E8;
  --c-on-main: #FFFFFF;

  --serif: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--sans);
  background: #EEF1F4;
  color: #1A1A1A;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------------- 顶栏 ---------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #E2E6EA;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  white-space: nowrap;
}
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--c-main);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-main) 18%, transparent);
}
.brand .muted {
  color: #7A858F;
  font-size: 11.5px;
  padding-left: 6px;
  border-left: 1px solid #DFE4E9;
  margin-left: 4px;
}

.tabs {
  display: flex;
  gap: 4px;
  background: #F2F4F6;
  border-radius: 10px;
  padding: 3px;
  margin-left: auto;
}
.tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: #5A6570;
  font: 600 12.5px/1 var(--sans);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: background .16s, color .16s;
}
.tab:hover { color: #1A1A1A; }
.tab.is-active {
  background: var(--c-main);
  color: var(--c-on-main);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--c-main) 30%, transparent);
}

.actions { display: flex; align-items: center; gap: 8px; }

.btn {
  appearance: none;
  border: 1px solid #DDE2E7;
  background: #fff;
  color: #1A1A1A;
  font: 600 12.5px/1 var(--sans);
  padding: 9px 14px;
  border-radius: 9px;
  cursor: pointer;
  transition: border-color .16s, background .16s, transform .06s;
}
.btn:hover { border-color: var(--c-main); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: progress; }
.btn--primary {
  background: var(--c-main);
  border-color: var(--c-main);
  color: var(--c-on-main);
}
.btn--ghost { background: transparent; }

#status {
  font-size: 12px;
  color: #5A6570;
  min-width: 90px;
}

/* ---------------- 舞台 ---------------- */
.stage-wrap {
  padding: 22px 18px 90px;
  display: flex;
  justify-content: center;
}

#stage {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
}

.poster-box {
  display: none;
  overflow: hidden;
  border-radius: 4px;
  box-shadow: 0 10px 40px rgba(16, 24, 40, .14), 0 1px 0 rgba(16, 24, 40, .06);
}
.poster-box.is-active { display: block; }

/* ---------------- 海报本体 ---------------- */
.poster {
  display: flex;
  flex-direction: column;
  background: var(--c-bg);
  color: var(--c-text);
  overflow: hidden;
  transform-origin: top left;
  font-family: var(--sans);
}

/* 头部 */
.poster__head {
  position: relative;
  background: var(--c-main);
  color: var(--c-on-main);
  padding: 34px 44px 26px;
  flex: 0 0 auto;
}
.poster__head::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 4px;
  background: var(--c-accent);
}
.poster__head-inner { position: relative; }

.poster__kicker {
  margin: 0 0 10px;
  font: 700 10.5px/1 var(--sans);
  letter-spacing: .3em;
  text-transform: uppercase;
  opacity: .82;
}
.poster__title {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: .005em;
  text-wrap: balance;
}
.poster__subtitle {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-style: italic;
  opacity: .92;
}
.poster__byline {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .02em;
  opacity: .9;
}
.poster__byline--sub { opacity: .72; margin-top: 2px; }

/* 正文 */
.poster__body {
  flex: 1 1 auto;
  display: grid;
  align-content: start;
  min-height: 0;
}
.col { display: flex; flex-direction: column; min-width: 0; }

/* 区块 */
.sec { break-inside: avoid; }
.sec__title {
  display: flex;
  align-items: baseline;
  gap: 7px;
  margin: 0 0 7px;
  font: 700 11px/1.3 var(--sans);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-main-dark);
}
.sec__num {
  font-family: var(--serif);
  font-size: 10.5px;
  letter-spacing: 0;
  color: var(--c-accent);
  font-weight: 700;
}
.sec__p {
  margin: 0 0 8px;
  line-height: 1.62;
  color: var(--c-text);
  hyphens: auto;
  text-align: justify;
  text-justify: inter-word;
}
.sec__p:last-child { margin-bottom: 0; }

/* 图 */
.figure { margin: 10px 0 14px; }
.figure__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--c-line);
}
.figure__ph {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px dashed var(--c-line);
  background:
    repeating-linear-gradient(45deg, color-mix(in srgb, var(--c-main) 4%, #fff) 0 10px, transparent 10px 20px);
}
.figure__ph-tag {
  font: 700 10px/1 var(--sans);
  letter-spacing: .28em;
  color: var(--c-muted);
}
.figure__ph-note {
  font-size: 10px;
  color: var(--c-muted);
  opacity: .85;
}
.figure__cap {
  margin-top: 6px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 9.5px;
  line-height: 1.45;
  color: var(--c-muted);
}

/* 页脚 */
.poster__foot {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 44px 18px;
}
.poster__foot-line {
  height: 1px;
  flex: 1 1 auto;
  background: var(--c-line);
}
.poster__foot-text {
  font-size: 9.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--c-muted);
}

/* ---------------- 各格式差异 ---------------- */

/* PPT 16:9 */
.poster--ppt .poster__head { padding: 26px 40px 20px; }
.poster--ppt .poster__title { font-size: 29px; line-height: 1.18; }
.poster--ppt .poster__subtitle { font-size: 14px; }
.poster--ppt .poster__body { grid-template-columns: repeat(3, 1fr); gap: 22px; padding: 22px 40px 8px; }
.poster--ppt .sec { border-top: 2px solid var(--c-main); padding-top: 9px; margin-bottom: 14px; }
.poster--ppt .sec__p { font-size: 11.2px; line-height: 1.58; margin-bottom: 6px; }
.poster--ppt .figure__ph { height: 104px; }
.poster--ppt .figure__img { max-height: 140px; object-fit: contain; }

/* PDF A4 竖版 */
.poster--pdf .poster__head { padding: 40px 40px 28px; }
.poster--pdf .poster__title { font-size: 33px; line-height: 1.2; }
.poster--pdf .poster__subtitle { font-size: 15px; }
.poster--pdf .poster__body { grid-template-columns: repeat(2, 1fr); gap: 26px; padding: 30px 40px 10px; }
.poster--pdf .sec { border-top: 2px solid var(--c-main); padding-top: 10px; margin-bottom: 18px; }
.poster--pdf .sec__p { font-size: 12.6px; line-height: 1.65; }
.poster--pdf .figure__ph { height: 150px; }

/* Word A4 竖版：更接近文档，单栏、字号略大 */
.poster--word .poster__head { background: var(--c-bg); color: var(--c-text); padding: 44px 56px 18px; border-bottom: 1px solid var(--c-line); }
.poster--word .poster__head::after { height: 3px; background: var(--c-accent); }
.poster--word .poster__kicker { color: var(--c-main); opacity: 1; }
.poster--word .poster__title { color: var(--c-main); font-size: 30px; line-height: 1.24; }
.poster--word .poster__subtitle { color: var(--c-muted); }
.poster--word .poster__byline { color: var(--c-muted); }
.poster--word .poster__body { grid-template-columns: 1fr; gap: 0; padding: 26px 56px 10px; }
.poster--word .sec { border-top: 0; padding-top: 0; margin-bottom: 20px; }
.poster--word .sec__title { border-bottom: 1px solid var(--c-line); padding-bottom: 5px; margin-bottom: 8px; font-size: 12px; }
.poster--word .sec__p { font-size: 13px; line-height: 1.72; }
.poster--word .figure__ph { height: 170px; }
.poster--word .poster__foot { padding: 0 56px 24px; }

/* ---------------- 打印 ---------------- */
@media print {
  .topbar, .palette-fab, .palette-panel, #status { display: none !important; }
  body { background: #fff; }
  .stage-wrap { padding: 0; }
  .poster-box { display: none !important; box-shadow: none; }
  .poster-box[data-format="pdf"] {
    display: block !important;
    width: auto !important;
    height: auto !important;
  }
  .poster { transform: none !important; }
  @page { size: A4 portrait; margin: 0; }
}