/* =========================================================
   Zine Poster Studio — 旧纸米色 + 橘色点缀 · 明信片风格
   ========================================================= */

:root {
  --paper:        #f4efe3;   /* 旧纸底 */
  --paper-deep:   #ece5d3;   /* 略深的纸 */
  --card:         #faf7ee;   /* 明信片卡片 */
  --ink:          #2e2a23;   /* 墨色 */
  --ink-soft:     #6b6355;   /* 淡墨 */
  --ink-faint:    #9a917f;   /* 更淡 */
  --accent:       #d9731a;   /* 橘黄点缀 */
  --accent-deep:  #b85e10;
  --hairline:     #d8cfba;   /* 细线 */
  --error:        #b3402e;
  --radius:       4px;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", "Source Han Serif SC", serif;
  --mono: "SFMono-Regular", "Courier New", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  color: var(--ink);
  background-color: var(--paper);
  /* 纸纹：极淡的纤维颗粒感 */
  background-image:
    radial-gradient(rgba(120, 100, 70, 0.05) 1px, transparent 1px),
    radial-gradient(rgba(120, 100, 70, 0.03) 1px, transparent 1px);
  background-size: 5px 5px, 11px 11px;
  background-position: 0 0, 6px 8px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-deep); text-decoration: none; border-bottom: 1px dotted var(--accent); }
a:hover { color: var(--accent); }

.quiet { color: var(--ink-faint); font-size: 0.85rem; }

/* ---------------- 页眉 ---------------- */
.site-header {
  border-bottom: 1px solid var(--hairline);
  background: rgba(250, 247, 238, 0.85);
  backdrop-filter: blur(4px);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  max-width: 1024px; margin: 0 auto; padding: 0.9rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand-mark {
  width: 14px; height: 14px; background: var(--accent);
  border-radius: 1px; transform: rotate(6deg);
  box-shadow: 2px 2px 0 rgba(46, 42, 35, 0.18);
}
.brand-name { font-weight: 600; letter-spacing: 0.06em; font-size: 0.95rem; }
.header-nav { display: flex; gap: 1.4rem; }
.header-nav a {
  color: var(--ink-soft); border: none; font-size: 0.9rem; letter-spacing: 0.1em;
}
.header-nav a:hover { color: var(--accent); }

main { max-width: 1024px; margin: 0 auto; padding: 0 1.5rem; }

/* ---------------- 明信片卡片通用 ---------------- */
.postcard {
  position: relative;
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  box-shadow:
    0 1px 0 rgba(46, 42, 35, 0.05),
    0 12px 32px -18px rgba(46, 42, 35, 0.25);
  padding: 2.4rem 2.6rem;
}

.card-eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--accent);
  margin-bottom: 1.1rem;
}
.step-gap { margin-top: 2rem; }

/* ---------------- 简介区 ---------------- */
.intro-section { padding: 4.5rem 0 3rem; }
.intro-card { max-width: 720px; margin: 0 auto; }

.stamp {
  position: absolute; top: 1.4rem; right: 1.6rem;
  width: 64px; height: 78px;
  border: 1px dashed var(--ink-faint);
  border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  transform: rotate(4deg);
  background:
    radial-gradient(circle at 30% 30%, rgba(217, 115, 26, 0.14), transparent 70%),
    var(--paper-deep);
}
.stamp-text {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em;
  color: var(--ink-soft); text-align: center; line-height: 1.6;
}
.postmark {
  position: absolute; bottom: 1.2rem; right: 1.8rem;
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.3em;
  color: var(--ink-faint);
  border: 1px solid var(--ink-faint);
  border-radius: 50%;
  width: 92px; height: 92px;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  transform: rotate(-10deg);
  opacity: 0.55;
  pointer-events: none;
}

.card-title {
  font-size: 1.55rem; font-weight: 600; line-height: 1.6;
  margin-bottom: 1.4rem; letter-spacing: 0.02em;
}
.card-body p { margin-bottom: 0.9rem; color: var(--ink-soft); font-size: 0.95rem; }
.intro-cta { margin-top: 1.4rem; display: inline-block; }

/* ---------------- 按钮 ---------------- */
.btn {
  font-family: var(--serif);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  padding: 0.65rem 1.6rem;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  transition: all 0.18s ease;
}
.btn-primary {
  background: var(--accent); border-color: var(--accent); color: #fff8ef;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-deep); border-color: var(--accent-deep); }
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-block { width: 100%; margin-top: 1.8rem; padding: 0.85rem; }

/* ---------------- 工作台 ---------------- */
.studio-section { padding: 1.5rem 0 3.5rem; }
.studio-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
  align-items: start;
}

.field-label {
  display: block; font-size: 0.85rem; color: var(--ink-soft);
  margin-bottom: 0.4rem; letter-spacing: 0.05em;
}
textarea, input[type="text"], select {
  width: 100%;
  font-family: var(--serif); font-size: 0.95rem; color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 0.6rem 0.8rem;
  resize: vertical;
}
textarea:focus, input:focus, select:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(217, 115, 26, 0.15);
}
.field-row { display: flex; gap: 1rem; margin-top: 1rem; }
.field-col { flex: 1; }
.field-col-narrow { flex: 0 0 9.5rem; }

/* ---------------- 上传区 ---------------- */
.drop-zone {
  border: 1.5px dashed var(--ink-faint);
  border-radius: var(--radius);
  padding: 1.8rem 1.2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.18s ease;
  background: rgba(236, 229, 211, 0.35);
}
.drop-zone:hover, .drop-zone.dragging {
  border-color: var(--accent);
  background: rgba(217, 115, 26, 0.06);
}
.drop-zone.dragging { transform: scale(1.01); }
.drop-icon { width: 30px; height: 30px; color: var(--ink-faint); margin-bottom: 0.4rem; }
.drop-zone.dragging .drop-icon, .drop-zone:hover .drop-icon { color: var(--accent); }
.drop-title { font-size: 0.92rem; color: var(--ink-soft); }
.drop-hint { font-size: 0.75rem; color: var(--ink-faint); margin-top: 0.25rem; }

.upload-list { list-style: none; margin-top: 1rem; }
.upload-item {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.55rem 0.2rem;
  border-bottom: 1px dashed var(--hairline);
}
.upload-thumb {
  width: 44px; height: 44px; object-fit: cover;
  border-radius: 2px; border: 1px solid var(--hairline);
  background: var(--paper-deep);
  flex-shrink: 0;
}
.upload-info { flex: 1; min-width: 0; }
.upload-name {
  font-size: 0.82rem; color: var(--ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.upload-progress {
  height: 3px; background: var(--paper-deep);
  border-radius: 2px; margin-top: 5px; overflow: hidden;
}
.upload-progress span {
  display: block; height: 100%; width: 0%;
  background: var(--accent); transition: width 0.15s ease;
}
.upload-status { font-size: 0.72rem; color: var(--ink-faint); flex-shrink: 0; }
.upload-status.done { color: var(--accent); }
.upload-remove {
  border: none; background: none; cursor: pointer;
  color: var(--ink-faint); font-size: 1rem; line-height: 1;
  padding: 0.2rem 0.4rem; flex-shrink: 0;
}
.upload-remove:hover { color: var(--error); }
.upload-ref-badge {
  font-size: 0.68rem; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 2px;
  padding: 0 0.35rem; flex-shrink: 0;
}

/* ---------------- 生成进度 ---------------- */
.gen-progress { margin-top: 1.2rem; }
.gen-progress-bar {
  height: 3px; background: var(--paper-deep);
  border-radius: 2px; overflow: hidden;
}
.gen-progress-bar span {
  display: block; height: 100%; width: 5%;
  background: var(--accent);
  transition: width 0.5s ease;
}
.gen-status {
  font-family: var(--mono); font-size: 0.75rem;
  color: var(--ink-soft); margin-top: 0.5rem; letter-spacing: 0.05em;
}
.error-box {
  margin-top: 1rem; padding: 0.7rem 0.9rem;
  border: 1px solid var(--error); border-radius: var(--radius);
  color: var(--error); font-size: 0.85rem;
  background: rgba(179, 64, 46, 0.05);
}

/* ---------------- 结果区 ---------------- */
.result-empty {
  padding: 4rem 1rem; text-align: center; color: var(--ink-faint);
}
.result-empty p { margin-bottom: 0.4rem; }

.poster-frame {
  position: relative;
  background: #fff;
  padding: 10px;
  border: 1px solid var(--hairline);
  box-shadow: 0 8px 24px -12px rgba(46, 42, 35, 0.35);
}
.poster-frame img { display: block; width: 100%; height: auto; }
.tape {
  position: absolute; width: 64px; height: 20px;
  background: rgba(217, 115, 26, 0.28);
  border-left: 1px dashed rgba(255,255,255,0.6);
  border-right: 1px dashed rgba(255,255,255,0.6);
}
.tape-tl { top: -10px; left: 18px; transform: rotate(-8deg); }
.tape-br { bottom: -10px; right: 18px; transform: rotate(-6deg); }

.result-meta { margin-top: 1.4rem; }
.recipe-line {
  font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.08em; color: var(--accent);
  margin-bottom: 0.5rem; word-break: break-all;
}
.note-line { font-size: 0.88rem; color: var(--ink-soft); margin-bottom: 0.9rem; }
.prompt-details { margin-bottom: 1.1rem; }
.prompt-details summary {
  cursor: pointer; font-size: 0.82rem; color: var(--ink-faint);
  letter-spacing: 0.06em;
}
.prompt-details summary:hover { color: var(--accent); }
.prompt-details pre {
  margin-top: 0.6rem; padding: 0.9rem;
  background: var(--paper); border: 1px solid var(--hairline);
  border-radius: var(--radius);
  font-family: var(--mono); font-size: 0.72rem; line-height: 1.7;
  white-space: pre-wrap; word-break: break-word;
  color: var(--ink-soft); max-height: 260px; overflow: auto;
}
.result-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; }
.result-actions .btn { font-size: 0.85rem; padding: 0.5rem 1.1rem; border-bottom: 1px solid var(--ink); }

/* ---------------- 画廊 ---------------- */
.gallery-section { padding: 1rem 0 4rem; }
.gallery-head { margin-bottom: 1.6rem; }
.gallery-grid {
  columns: 3; column-gap: 1.4rem;
}
.gallery-item {
  break-inside: avoid; margin-bottom: 1.4rem;
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 6px 18px -10px rgba(46, 42, 35, 0.25);
  cursor: pointer;
  transition: transform 0.18s ease;
}
.gallery-item:hover { transform: translateY(-3px); }
.gallery-item img { display: block; width: 100%; height: auto; }
.gallery-item-meta {
  padding: 0.6rem 0.8rem;
  font-size: 0.75rem; color: var(--ink-faint);
  display: flex; justify-content: space-between; gap: 0.5rem;
}
.gallery-item-theme {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  color: var(--ink-soft);
}
.gallery-empty { text-align: center; padding: 2rem 0; }

/* ---------------- 页脚 ---------------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 2rem 1.5rem 3rem;
  text-align: center;
  font-size: 0.82rem; color: var(--ink-soft);
}
.site-footer p { margin-bottom: 0.3rem; }

/* ---------------- 移动端适配 ---------------- */
@media (max-width: 820px) {
  .postcard { padding: 1.6rem 1.3rem; }
  .studio-grid { grid-template-columns: 1fr; }
  .gallery-grid { columns: 2; column-gap: 1rem; }
  .intro-section { padding: 2.5rem 0 2rem; }
  .card-title { font-size: 1.25rem; }
  .stamp { width: 52px; height: 64px; top: 1rem; right: 1rem; }
  .postmark { display: none; }
  .field-row { flex-direction: column; gap: 0.8rem; }
  .field-col-narrow { flex: 1; }
  .header-nav { gap: 1rem; }
}
@media (max-width: 420px) {
  .gallery-grid { columns: 1; }
}