/* ===== 基础 ===== */
:root {
  --bg: #0e1116;
  --bg-soft: #141922;
  --card: #1a2029;
  --card-hover: #202836;
  --border: #2a313d;
  --text: #e8eaed;
  --text-2: #9aa3af;
  --text-3: #6b7480;
  --accent: #ff4500;
  --accent-hover: #ff5c22;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 30px rgba(0, 0, 0, .35);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

html[data-theme="light"] {
  --bg: #f8f9fb;
  --bg-soft: #f1f3f5;
  --card: #ffffff;
  --card-hover: #f5f7f9;
  --border: #e1e4e8;
  --text: #1f2328;
  --text-2: #57606a;
  --text-3: #8c959f;
  --shadow: 0 8px 30px rgba(0, 0, 0, .12);
}

html[data-theme="light"] body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(255, 69, 0, .06), transparent 60%),
    radial-gradient(900px 500px at 10% -10%, rgba(0, 122, 255, .05), transparent 60%),
    var(--bg);
}

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

html, body { height: 100%; }

body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(255, 69, 0, .08), transparent 60%),
    radial-gradient(900px 500px at 10% -10%, rgba(0, 122, 255, .07), transparent 60%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container { width: min(1160px, 92%); margin: 0 auto; }

button { font-family: inherit; cursor: pointer; }

/* ===== 顶栏 ===== */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(14, 17, 22, .8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

html[data-theme="light"] .site-header {
  background: rgba(255, 255, 255, .85);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
}

.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--text); }
.brand-name { color: var(--text); }
.brand-logo { color: var(--accent); }
.brand-name { font-size: 19px; font-weight: 800; letter-spacing: .2px; }

.theme-toggle {
  margin-left: auto;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-2);
  border-radius: 999px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color .2s, border-color .2s, background .2s, transform .1s;
}

.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.theme-toggle:active { transform: scale(.93); }

.theme-toggle .sun { display: none; }
html[data-theme="light"] .theme-toggle .moon { display: none; }
html[data-theme="light"] .theme-toggle .sun { display: block; }

/* ===== 主区域 ===== */
main.container { flex: 1; width: min(1000px, 92%); }

.hero { text-align: center; padding: 56px 0 36px; }

.hero h1 { font-size: 30px; font-weight: 800; letter-spacing: .3px; }
.hero .sub { margin-top: 10px; color: var(--text-2); font-size: 15px; }

/* 表单 */
.extract-form {
  margin-top: 30px;
  display: flex;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px;
  transition: border-color .2s, box-shadow .2s;
}

.extract-form:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 69, 0, .18);
}

.extract-form input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 15px;
  padding: 10px 18px;
}

.extract-form input::placeholder { color: var(--text-3); }

.extract-form button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 10px 28px;
  font-size: 15px;
  font-weight: 700;
  transition: background .2s, transform .1s;
}

.extract-form button:hover { background: var(--accent-hover); }
.extract-form button:active { transform: scale(.97); }
.extract-form button:disabled { opacity: .55; cursor: not-allowed; }

.extract-form .clear-input {
  background: transparent;
  border: none;
  color: var(--text-3);
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  align-self: center;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: color .2s, background .2s;
}

.extract-form .clear-input:hover { color: var(--text); background: var(--bg-soft); }
.extract-form .clear-input[hidden] { display: none !important; }

.hero-actions { margin-top: 14px; }

.example-btn {
  background: transparent;
  color: var(--text-2);
  border: 1px dashed var(--border);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13px;
  transition: color .2s, border-color .2s;
}

.example-btn:hover { color: var(--accent); border-color: var(--accent); }

.form-error {
  margin-top: 14px;
  color: #ff6b6b;
  font-size: 14px;
}

/* ===== 加载 ===== */
.loading { text-align: center; padding: 60px 0; color: var(--text-2); }
.spinner {
  width: 40px; height: 40px;
  margin: 0 auto 16px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 结果区 ===== */
.result { padding-bottom: 40px; }

.post-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 22px;
}

.post-topline { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.badge {
  display: inline-block;
  background: rgba(255, 69, 0, .14);
  color: var(--accent-hover);
  font-size: 13px;
  font-weight: 700;
  border-radius: 6px;
  padding: 2px 10px;
}

.image-stats { font-size: 13px; color: var(--text-2); }

.post-meta h2 { font-size: 19px; margin-top: 10px; line-height: 1.45; }

.post-author { font-size: 13px; color: var(--text-3); margin-top: 4px; }

/* 选择工具栏 */
.selection-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  margin-bottom: 18px;
}

.select-all {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}

.select-all input,
.img-check {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.select-count { font-size: 13px; color: var(--text-2); margin-left: auto; }

.dl-mode {
  font-size: 12px;
  color: var(--text-3);
  max-width: 240px;
  text-align: right;
  line-height: 1.4;
}

.batch-download {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 700;
  transition: background .2s, transform .1s;
}

.batch-download:hover:not(:disabled) { background: var(--accent-hover); }
.batch-download:active:not(:disabled) { transform: scale(.96); }
.batch-download:disabled { opacity: .45; cursor: not-allowed; }

/* 图片网格：一排 3 个 */
.masonry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.masonry-item {
  margin-bottom: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--border);
  position: relative;
  transition: transform .2s, box-shadow .2s;
}

.masonry-item:hover { transform: translateY(-3px); box-shadow: var(--shadow); }

.masonry-item.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(255, 69, 0, .45);
}

.img-check {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 3;
  width: 20px;
  height: 20px;
  background: rgba(0, 0, 0, .35);
  border-radius: 6px;
}

.img-wrap { position: relative; }

.img-wrap img {
  display: block;
  width: 100%;
  height: 230px;
  object-fit: cover;
  cursor: zoom-in;
  transition: transform .3s ease;
}

.img-wrap:hover img { transform: scale(1.04); }

.img-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 12px;
  background: linear-gradient(to top, rgba(0, 0, 0, .55), transparent 45%);
  opacity: 0;
  transition: opacity .2s;
}

.masonry-item:hover .img-overlay { opacity: 1; }

.video-tag {
  margin-right: auto;
  font-size: 12px;
  color: #fff;
  background: rgba(0, 0, 0, .55);
  border-radius: 6px;
  padding: 4px 10px;
}

.dl-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  transition: background .2s;
}

.dl-btn:hover { background: var(--accent-hover); }

/* 图片中间操作按钮：放大 / 删除 */
.img-actions {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 12px;
  z-index: 3;
  opacity: .85;
  transition: opacity .2s;
}

.img-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(0, 0, 0, .55);
  color: #fff;
  cursor: pointer;
  transition: background .2s, transform .15s;
}

.img-action-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.img-action-btn:hover {
  background: rgba(0, 0, 0, .8);
  transform: scale(1.1);
}

.img-actions:hover { opacity: 1; }

.del-btn:hover { background: #d93025; }

/* ===== 空状态 ===== */
.empty { text-align: center; padding: 60px 0; color: var(--text-2); }
.empty-icon { color: var(--text-3); margin-bottom: 12px; opacity: .6; }

/* ===== 灯箱 ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(5, 7, 10, .94);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 关键修复：.lightbox 的 display:flex 会覆盖 hidden 属性的 display:none，
   导致灯箱在隐藏状态下仍铺满全屏、拦截所有点击 */
.lightbox[hidden] { display: none !important; }

/* 浏览器全屏查看时使用纯黑背景，更沉浸 */
.lightbox:fullscreen { background: #000; }

.lb-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 95vw;
  max-height: 92vh;
  position: relative;
}

.lb-body img {
  max-width: 95vw;
  max-height: 88vh;
  border-radius: 8px;
  box-shadow: 0 10px 60px rgba(0, 0, 0, .6);
  cursor: zoom-in;
}

.lb-body img.lb-loading {
  min-width: 120px;
  min-height: 120px;
  background:
    conic-gradient(from 0deg, transparent 0%, var(--accent) 80%, transparent 100%);
  border-radius: 50%;
  animation: spin .9s linear infinite;
  box-shadow: none;
}

.lb-body img.lb-error { display: none; }

.lb-caption { margin-top: 12px; color: var(--text-2); font-size: 13px; text-align: center; }

/* 灯箱加载失败提示 */
.lb-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  padding: 28px 34px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: min(520px, 88vw);
}

.lb-error[hidden] { display: none !important; }

.lb-error-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 107, 107, .15);
  color: #ff6b6b;
  font-size: 26px;
  font-weight: 800;
  line-height: 48px;
  text-align: center;
}

.lb-error-title { font-size: 17px; font-weight: 700; color: var(--text); }

.lb-error-url {
  font-size: 12px;
  color: var(--text-3);
  word-break: break-all;
  max-width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.lb-error-tip { font-size: 13px; color: var(--text-2); line-height: 1.5; }

.lb-error-actions {
  display: flex;
  gap: 10px;
  margin-top: 6px;
}

.lb-error-actions button {
  background: var(--card-hover);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  transition: background .2s, border-color .2s;
}

.lb-error-actions button:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* 瀑布流图片加载失败占位 */
.img-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 160px;
  padding: 22px;
  text-align: center;
  background: var(--bg-soft);
  color: var(--text-2);
}

.img-error-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 107, 107, .12);
  color: #ff6b6b;
  font-size: 20px;
  font-weight: 800;
  line-height: 38px;
  text-align: center;
}

.img-error-file {
  font-size: 13px;
  color: var(--text);
  word-break: break-all;
  max-width: 100%;
}

.img-error-tip { font-size: 12px; color: var(--text-3); }

.img-error-open {
  background: transparent;
  color: var(--accent-hover);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  transition: background .2s, border-color .2s;
}

.img-error-open:hover { background: rgba(255, 69, 0, .1); border-color: var(--accent); }

.lb-close {
  position: absolute;
  top: 18px;
  right: 22px;
  background: none;
  border: none;
  color: var(--text-2);
  font-size: 34px;
  line-height: 1;
  transition: color .2s;
}

.lb-close:hover { color: #fff; }

.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .14);
  color: #fff;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  font-size: 24px;
  line-height: 1;
  transition: background .2s;
}

.lb-nav:hover { background: rgba(255, 255, 255, .18); }

.lb-prev { left: 22px; }
.lb-next { right: 22px; }

.lb-actions {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
}

.lb-actions button {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  transition: background .2s, border-color .2s;
}

.lb-actions button:hover { background: var(--card-hover); border-color: var(--accent); color: #fff; }

.lb-actions button:first-child { background: var(--accent); border-color: var(--accent); color: #fff; }
.lb-actions button:first-child:hover { background: var(--accent-hover); }

body.no-scroll { overflow: hidden; }

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 22px;
  font-size: 14px;
  box-shadow: var(--shadow);
  z-index: 200;
  animation: toast-in .25s ease;
}

@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 12px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ===== 页脚 ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  color: var(--text-3);
  font-size: 12.5px;
}

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .masonry { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .masonry { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero { padding: 36px 0 26px; }
  .hero h1 { font-size: 23px; }
  .extract-form { flex-direction: column; border-radius: 16px; }
  .extract-form button { border-radius: 10px; }
  .lb-nav { width: 38px; height: 38px; }
  .lb-prev { left: 10px; }
  .lb-next { right: 10px; }
}