/* KBG AI VIDEO ENGINE — 组件层。每个区块一个命名空间，方便单独改，不互相
   牵连。颜色/字体一律用 kbg-theme.css 里的变量，这里不再写死颜色值。 */

/* ---------- 布局容器 ---------- */
.kbg-shell { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.kbg-section { padding: 44px 0; }
.kbg-section-head { text-align: center; margin-bottom: 28px; }
.kbg-section-title {
  font-family: var(--kbg-font-tech);
  font-size: 22px; font-weight: 700; letter-spacing: 1px;
  color: var(--kbg-text); margin: 0 0 6px;
}
.kbg-section-sub { color: var(--kbg-text-3); font-size: 13px; margin: 0; }

/* ---------- 顶部导航 ---------- */
.kbg-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(5, 5, 5, 0.72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--kbg-border-gold);
  box-shadow: 0 1px 24px rgba(255, 176, 0, 0.06);
}
.kbg-nav-inner {
  max-width: 1600px; margin: 0 auto; padding: 0 20px;
  height: 48px; display: flex; align-items: center; justify-content: space-between;
}
.kbg-nav-brand { display: flex; align-items: center; gap: 10px; color: var(--kbg-text); }
.kbg-nav-logo {
  width: 41px; height: 41px; border-radius: 50%;
  box-shadow: 0 0 10px var(--kbg-shadow-gold);
}
.kbg-nav-brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.kbg-nav-brand-text strong { font-size: 14px; font-weight: 700; color: var(--kbg-text); }
.kbg-nav-brand-text em {
  font-style: normal; font-family: var(--kbg-font-tech); font-size: 10px;
  letter-spacing: 3px; color: var(--kbg-gold-1);
}
.kbg-nav-links { display: flex; align-items: center; gap: 22px; }
.kbg-nav-links a { color: var(--kbg-text-2); font-size: 14px; transition: color .15s; }
.kbg-nav-links a:hover { color: var(--kbg-gold-1); }
.kbg-nav-toggle {
  display: none; background: none; border: 1px solid var(--kbg-border-gold);
  color: var(--kbg-gold-1); width: 36px; height: 36px; border-radius: 8px; font-size: 18px; cursor: pointer;
}

/* ---------- Hero ---------- */
.kbg-hero { position: relative; overflow: hidden; padding: 46px 0 30px; }
.kbg-hero-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse at 20% 15%, rgba(255, 176, 0, 0.10), transparent 55%),
    radial-gradient(ellipse at 85% 80%, rgba(217, 154, 22, 0.08), transparent 50%),
    linear-gradient(180deg, var(--kbg-bg-1) 0%, var(--kbg-bg-0) 100%);
}
/* 赛博网格线 + 世界地图点阵——纯CSS画的，不加载任何图片，性能开销接近零 */
.kbg-hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(245, 185, 66, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 185, 66, 0.055) 1px, transparent 1px),
    radial-gradient(rgba(245, 185, 66, 0.35) 1px, transparent 1.4px);
  background-size: 42px 42px, 42px 42px, 14px 14px;
  background-position: 0 0, 0 0, 0 0;
  mask-image: radial-gradient(ellipse 80% 70% at 60% 30%, #000 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 60% 30%, #000 40%, transparent 85%);
  opacity: .5;
}
.kbg-hero-bg::after {
  /* 扫描线，一条极细的横向金光缓慢移动，不是高频闪烁 */
  content: ""; position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--kbg-gold-2), transparent);
  opacity: .5; animation: kbg-scan 6s linear infinite;
}
@keyframes kbg-scan { 0% { top: 0%; } 100% { top: 100%; } }

/* 视觉反馈修复：Hero容器最大宽度提到1600px，PC大屏不再两侧大片留白；
   标题/说明文字自己有max-width控制行长，不会因为容器变宽就跟着拉成一整行。 */
.kbg-hero-inner { position: relative; z-index: 1; max-width: 1600px; margin: 0 auto; padding: 0 24px; text-align: center; }
.kbg-hero-badge { width: 77px; height: 77px; border-radius: 50%; margin-bottom: 14px; box-shadow: 0 0 18px var(--kbg-shadow-gold); }
.kbg-hero-title {
  font-family: var(--kbg-font-tech); font-weight: 800;
  font-size: clamp(28px, 6vw, 46px); letter-spacing: 1px; margin: 0 0 8px;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--kbg-gold-1) 65%, var(--kbg-gold-3) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 18px rgba(255, 176, 0, 0.18);
}
.kbg-hero-subtitle { font-size: 16px; color: var(--kbg-gold-1); font-weight: 600; margin: 0 0 10px; }
.kbg-hero-desc { font-size: 14px; color: var(--kbg-text-2); margin: 0 0 26px; max-width: 560px; margin-left: auto; margin-right: auto; }

/* ---------- 解析输入区 ---------- */
/* Hero容器变宽到1600px后，输入框单独限宽避免"一整行细长条"——标题/平台卡片
   可以铺得更开，但一行输入框太宽反而不好用（视线要左右扫很远），保持
   跟主流搜索框类似的合理宽度。 */
.kbg-parsebox { display: flex; gap: 10px; align-items: stretch; max-width: 900px; margin: 0 auto; }
.kbg-parsebox-input-wrap {
  flex: 1; position: relative; display: flex; align-items: center;
  min-height: 64px;
  background: var(--kbg-card-bg);
  border: 1px solid var(--kbg-border-gold);
  border-radius: var(--kbg-radius);
  transition: box-shadow .2s, border-color .2s;
}
.kbg-parsebox-input-wrap:focus-within {
  border-color: var(--kbg-gold-2);
  box-shadow: 0 0 0 3px var(--kbg-shadow-gold), 0 0 12px var(--kbg-shadow-gold);
}
.kbg-parsebox-icon { width: 18px; height: 18px; margin-left: 14px; flex-shrink: 0; color: var(--kbg-gold-1); }
.kbg-parsebox-input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--kbg-text); font-size: 15px; padding: 20px 10px;
  min-width: 0; /* 长文案不撑坏布局，靠input自身溢出滚动+截断显示 */
  text-overflow: ellipsis;
}
.kbg-parsebox-input::placeholder { color: var(--kbg-text-3); }
.kbg-parsebox-clear {
  display: none; background: none; border: none; color: var(--kbg-text-3);
  font-size: 16px; cursor: pointer; padding: 6px 14px;
}
.kbg-parsebox-clear.show { display: block; }
.kbg-parsebox-clear:hover { color: var(--kbg-error); }

.kbg-parse-btn {
  flex-shrink: 0; border: none; cursor: pointer;
  min-height: 64px; padding: 0 30px; border-radius: var(--kbg-radius);
  font-size: 15px; font-weight: 700; color: #1a1200; white-space: nowrap;
  background: linear-gradient(135deg, var(--kbg-gold-1), var(--kbg-gold-2) 55%, var(--kbg-orange));
  box-shadow: 0 4px 14px var(--kbg-shadow-gold);
  transition: transform .12s ease, box-shadow .2s;
}
.kbg-parse-btn:hover { box-shadow: 0 6px 18px rgba(255, 176, 0, 0.28); transform: translateY(-1px); }
.kbg-parse-btn:active { transform: scale(0.97); }
.kbg-parse-btn:disabled { opacity: .7; cursor: not-allowed; transform: none; }

.kbg-notice { color: var(--kbg-warning); font-size: 13px; margin-top: 10px; min-height: 1em; }

/* ---------- 平台状态卡片 ---------- */
.kbg-platform-row {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 26px;
}
.kbg-platform-card {
  position: relative;
  background: var(--kbg-card-bg);
  border: 1px solid var(--kbg-border-gold);
  border-radius: var(--kbg-radius);
  padding: 12px 16px; min-width: 150px; text-align: left;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
/* HUD切角——跟结果面板同一套语言，卡片右上角一个小缺角，不是靠发光堆出来的科技感 */
.kbg-platform-card::after {
  content: ""; position: absolute; top: -1px; right: -1px; width: 14px; height: 14px;
  border-top: 2px solid var(--kbg-gold-1); border-right: 2px solid var(--kbg-gold-1);
  opacity: .7; pointer-events: none;
}
.kbg-platform-card:hover {
  transform: translateY(-4px);
  border-color: var(--kbg-gold-2);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.35), 0 0 14px var(--kbg-shadow-gold);
}
.kbg-platform-card-top { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.kbg-platform-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.kbg-platform-dot.ok { background: var(--kbg-success); box-shadow: 0 0 6px var(--kbg-success); }
.kbg-platform-dot.partial { background: var(--kbg-warning); box-shadow: 0 0 6px var(--kbg-warning); }
.kbg-platform-dot.info { background: var(--kbg-info); box-shadow: 0 0 6px var(--kbg-info); }
.kbg-platform-dot.pending { background: var(--kbg-text-3); }
.kbg-platform-dot.off { background: var(--kbg-error); box-shadow: 0 0 6px var(--kbg-error); }
.kbg-platform-name { font-weight: 700; font-size: 14px; color: var(--kbg-text); }
.kbg-platform-status { font-size: 12px; color: var(--kbg-text-2); margin: 2px 0; }
.kbg-platform-desc { font-size: 11px; color: var(--kbg-text-3); }

/* ---------- 解析中状态（阶段进度） ---------- */
.kbg-loading {
  max-width: 560px; margin: 24px auto 0; padding: 20px;
  background: var(--kbg-card-bg); border: 1px solid var(--kbg-border-gold); border-radius: var(--kbg-radius-lg);
}
.kbg-loading-ring {
  width: 46px; height: 46px; margin: 0 auto 14px;
  border-radius: 50%; border: 3px solid rgba(245, 185, 66, 0.18);
  border-top-color: var(--kbg-gold-2);
  animation: kbg-spin 0.9s linear infinite;
}
@keyframes kbg-spin { to { transform: rotate(360deg); } }
.kbg-loading-steps { display: flex; flex-direction: column; gap: 8px; }
.kbg-step { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--kbg-text-3); }
.kbg-step-mark {
  width: 18px; height: 18px; border-radius: 50%; flex-shrink: 0;
  border: 1.5px solid var(--kbg-text-3); display: flex; align-items: center; justify-content: center;
  font-size: 11px; transition: all .2s;
}
.kbg-step.active .kbg-step-mark { border-color: var(--kbg-gold-2); color: var(--kbg-gold-2); animation: kbg-pulse 1s ease-in-out infinite; }
.kbg-step.active { color: var(--kbg-text); }
.kbg-step.done .kbg-step-mark { border-color: var(--kbg-success); background: var(--kbg-success); color: #042; }
.kbg-step.done { color: var(--kbg-text-2); }
.kbg-step.failed .kbg-step-mark { border-color: var(--kbg-error); background: var(--kbg-error); color: #fff; }
.kbg-step.failed { color: var(--kbg-error); }
@keyframes kbg-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .4; } }
.kbg-loading-hint { text-align: center; font-size: 12px; color: var(--kbg-text-3); margin-top: 12px; min-height: 1em; }

/* ---------- 结果面板 ---------- */
.kbg-result-panel {
  max-width: 980px; margin: 24px auto 0; padding: 0 20px;
}
.kbg-result-card {
  position: relative;
  background: var(--kbg-card-bg);
  border: 1px solid var(--kbg-border-gold);
  border-radius: var(--kbg-radius-lg);
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(245, 185, 66, 0.06) inset;
  padding: 22px;
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 26px;
}
/* HUD切角——左上/右下对角各一条短金线（经典HUD面板做法，不是四角都要），
   不用图片，纯CSS */
.kbg-result-card::before, .kbg-result-card::after {
  content: ""; position: absolute; width: 22px; height: 22px; pointer-events: none;
  border-color: var(--kbg-gold-1); opacity: .8;
}
.kbg-result-card::before { top: -1px; left: -1px; border-top: 2px solid; border-left: 2px solid; }
.kbg-result-card::after { bottom: -1px; right: -1px; border-bottom: 2px solid; border-right: 2px solid; }

.kbg-result-left, .kbg-result-right { min-width: 0; }

.kbg-player-frame {
  position: relative; background: #000; border: 1px solid var(--kbg-border-gold);
  border-radius: var(--kbg-radius); overflow: hidden;
}
.kbg-player-frame video, .kbg-player-frame img { display: block; width: 100%; max-height: 560px; object-fit: contain; background: #000; }
.kbg-player-meta {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; font-size: 12px; color: var(--kbg-text-2);
  font-family: var(--kbg-font-en);
}
.kbg-player-meta span:not(:last-child)::after { content: "·"; margin-left: 6px; color: var(--kbg-text-3); }

.kbg-result-title { font-size: 17px; font-weight: 700; line-height: 1.4; margin: 0 0 10px;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.kbg-result-author { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.kbg-result-author img { width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--kbg-border-gold); }
.kbg-result-author span { font-size: 13px; color: var(--kbg-text-2); }

.kbg-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; margin-bottom: 16px; }
.kbg-info-item { font-size: 12px; }
.kbg-info-item label { display: block; color: var(--kbg-text-3); margin-bottom: 2px; }
.kbg-info-item span { color: var(--kbg-text-2); font-family: var(--kbg-font-en); }

/* ---------- 画质芯片 ---------- */
.kbg-quality-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.kbg-quality-chip {
  font-family: var(--kbg-font-tech); font-size: 12px; font-weight: 700;
  padding: 6px 14px; border-radius: 999px; cursor: pointer;
  background: transparent; color: var(--kbg-gold-1); border: 1px solid var(--kbg-border-gold);
  transition: all .15s;
}
.kbg-quality-chip:hover { transform: translateY(-2px); border-color: var(--kbg-gold-2); box-shadow: 0 3px 8px var(--kbg-shadow-gold); }
.kbg-quality-chip.active {
  background: linear-gradient(135deg, var(--kbg-gold-1), var(--kbg-gold-2));
  color: #1a1200; box-shadow: 0 0 16px var(--kbg-shadow-gold); border-color: transparent;
}
.kbg-quality-chip.disabled { opacity: .4; cursor: not-allowed; }

/* ---------- 下载区 ---------- */
.kbg-download-area { display: flex; flex-wrap: wrap; gap: 10px; }
.kbg-btn-primary {
  flex: 1 1 auto; text-align: center; border: none; cursor: pointer;
  padding: 12px 18px; border-radius: var(--kbg-radius); font-size: 14px; font-weight: 700; color: #1a1200;
  background: linear-gradient(135deg, var(--kbg-gold-1), var(--kbg-gold-2) 55%, var(--kbg-orange));
  box-shadow: 0 4px 16px var(--kbg-shadow-gold);
  transition: transform .12s, box-shadow .2s;
}
.kbg-btn-primary:hover { box-shadow: 0 6px 22px rgba(255, 176, 0, 0.3); }
.kbg-btn-primary:active { transform: scale(0.97); }
.kbg-btn-ghost {
  flex: 1 1 auto; text-align: center; cursor: pointer;
  padding: 11px 16px; border-radius: var(--kbg-radius); font-size: 13px; font-weight: 600;
  background: transparent; color: var(--kbg-text-2); border: 1px solid var(--kbg-border-gold);
  transition: all .15s;
}
.kbg-btn-ghost:hover { color: var(--kbg-gold-1); border-color: var(--kbg-gold-2); box-shadow: 0 0 12px var(--kbg-shadow-gold); }

.kbg-tech-meta { margin-top: 16px; font-size: 11px; color: var(--kbg-text-3); }

/* ---------- 图集 ---------- */
.kbg-gallery-info { display: flex; justify-content: space-between; align-items: center; margin: 16px 0 10px; font-size: 13px; color: var(--kbg-text-2); }
.kbg-gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.kbg-gallery-item { position: relative; border: 1px solid var(--kbg-border-gold); border-radius: 8px; overflow: hidden; background: #000; }
.kbg-gallery-item img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; cursor: zoom-in; }
.kbg-gallery-item-meta { font-size: 10px; color: var(--kbg-text-3); padding: 4px 6px; }
.kbg-gallery-item a.kbg-gallery-dl {
  position: absolute; right: 4px; bottom: 4px; background: rgba(0,0,0,.6); color: var(--kbg-gold-1);
  font-size: 11px; padding: 2px 6px; border-radius: 4px;
}

/* ---------- 错误告警面板 ---------- */
.kbg-alert {
  border: 1px solid rgba(255, 77, 79, 0.4);
  background: rgba(255, 77, 79, 0.06);
  border-radius: var(--kbg-radius-lg);
  padding: 20px; text-align: center;
}
.kbg-alert-icon { font-size: 26px; margin-bottom: 8px; }
.kbg-alert-title { font-size: 15px; font-weight: 700; color: var(--kbg-error); margin: 0 0 6px; }
.kbg-alert-desc { font-size: 13px; color: var(--kbg-text-2); margin: 0; }

/* ---------- 开发者诊断（终端风格） ---------- */
.kbg-diag { margin-top: 16px; text-align: left; }
.kbg-diag summary {
  cursor: pointer; font-size: 12px; color: var(--kbg-text-3); list-style: none;
  display: inline-flex; align-items: center; gap: 6px;
}
.kbg-diag summary::-webkit-details-marker { display: none; }
.kbg-diag summary::before { content: "▸"; color: var(--kbg-gold-1); transition: transform .15s; }
.kbg-diag[open] summary::before { transform: rotate(90deg); }
.kbg-diag-term {
  margin-top: 8px; background: #000; border: 1px solid var(--kbg-border-gold); border-radius: 8px;
  padding: 12px 14px; font-family: "SFMono-Regular", Consolas, monospace; font-size: 12px;
  color: var(--kbg-success); max-height: 260px; overflow: auto;
}
.kbg-diag-term div { white-space: pre-wrap; word-break: break-all; margin-bottom: 4px; }
.kbg-diag-term .k { color: var(--kbg-gold-1); }

/* ---------- 统计卡片（热门解析） ---------- */
.kbg-stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; }
.kbg-stat-card {
  background: var(--kbg-card-bg); border: 1px solid var(--kbg-border-gold); border-radius: var(--kbg-radius);
  padding: 16px;
}
.kbg-stat-card h4 { margin: 0 0 10px; font-size: 14px; color: var(--kbg-text); }
.kbg-stat-row { display: flex; justify-content: space-between; font-size: 12px; color: var(--kbg-text-2); padding: 3px 0; }
.kbg-stat-row b { color: var(--kbg-gold-1); font-family: var(--kbg-font-en); }

/* ---------- 能力卡片 ---------- */
.kbg-capability-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.kbg-capability-card {
  background: var(--kbg-card-bg); border: 1px solid var(--kbg-border-gold); border-radius: var(--kbg-radius);
  padding: 18px; text-align: center; transition: transform .15s;
}
.kbg-capability-card:hover { transform: translateY(-3px); }
.kbg-capability-icon { font-size: 26px; margin-bottom: 8px; }
.kbg-capability-title { font-size: 14px; font-weight: 700; margin: 0 0 6px; color: var(--kbg-text); }
.kbg-capability-desc { font-size: 12px; color: var(--kbg-text-3); margin: 0; }

/* ---------- 通用工具列表（保留原有分类/最新工具区块，换皮） ---------- */
.kbg-tool-list-v2 { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.kbg-tool-list-v2 li a {
  display: block; padding: 12px 14px; background: var(--kbg-card-bg);
  border: 1px solid var(--kbg-border-gold); border-radius: 8px; color: var(--kbg-text-2); font-size: 13px;
  transition: all .15s;
}
.kbg-tool-list-v2 li a:hover { color: var(--kbg-gold-1); border-color: var(--kbg-gold-2); transform: translateY(-2px); }

/* ---------- 页脚 ---------- */
.kbg-footer-v2 {
  border-top: 1px solid var(--kbg-border-gold);
  background: var(--kbg-bg-1);
  padding: 26px 20px; text-align: center;
}
.kbg-footer-logo { width: 48px; height: 48px; border-radius: 50%; margin-bottom: 8px; }
.kbg-footer-brand { font-weight: 700; color: var(--kbg-text); margin: 0 0 4px; font-size: 14px; }
.kbg-footer-meta { font-size: 12px; color: var(--kbg-text-2); margin: 0 0 4px; }
.kbg-footer-tagline { font-size: 11px; color: var(--kbg-text-3); margin: 0; }