/* ============ CSS Variables ============ */
:root {
  --bg: #0d0f14;
  --bg-soft: #12151d;
  --panel: rgba(23, 27, 38, 0.82);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #eef1f6;
  --text-dim: #8f98a8;
  --text-faint: #5d6675;
  --accent: #7c5cff;
  --accent-2: #00c2ff;
  --danger: #ff5d7d;
  --success: #3ddc97;
  --warning: #ffb84d;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

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

html, body { height: 100%; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 28px clamp(14px, 3vw, 40px) 60px;
  overflow-x: hidden;
}

body.no-scroll { overflow: hidden; }

/* ============ 背景光晕 ============ */
.bg-glow {
  position: fixed;
  width: 60vw;
  height: 60vw;
  min-width: 420px;
  min-height: 420px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.22;
  z-index: -1;
  pointer-events: none;
}
.bg-glow-1 { top: -20vw; left: -10vw; background: radial-gradient(circle, #7c5cff, transparent 65%); }
.bg-glow-2 { bottom: -25vw; right: -10vw; background: radial-gradient(circle, #00c2ff, transparent 65%); animation: floatGlow 14s ease-in-out infinite alternate; }

@keyframes floatGlow {
  from { transform: translateY(0) translateX(0) scale(1); }
  to   { transform: translateY(-30px) translateX(-20px) scale(1.08); }
}

/* ============ 头部 ============ */
.site-header {
  max-width: 1280px;
  margin: 0 auto 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-logo {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  font-size: 26px;
  background: linear-gradient(135deg, rgba(124,92,255,.25), rgba(0,194,255,.2));
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.brand-text h1 { font-size: 22px; letter-spacing: -0.02em; }
.brand-text p { color: var(--text-dim); font-size: 13px; margin-top: 3px; display: flex; align-items: center; gap: 6px; }
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(61,220,151,.7);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(61,220,151,.55); }
  70%  { box-shadow: 0 0 0 9px rgba(61,220,151,0); }
  100% { box-shadow: 0 0 0 0 rgba(61,220,151,0); }
}
.doc-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
  padding: 8px 14px;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: var(--panel);
  transition: all .2s;
}
.doc-link:hover { color: var(--text); border-color: rgba(124,92,255,.5); }

/* ============ 主布局 ============ */
.layout {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 400px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

/* ============ 左侧面板 ============ */
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 22px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  position: sticky;
  top: 20px;
}
.panel-section + .panel-section { margin-top: 22px; }
.label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 10px; }
.label-tip { color: var(--text-faint); font-weight: 400; font-size: 12px; margin-left: 4px; }

.prompt-wrap {
  background: rgba(0,0,0,.32);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 12px;
  transition: border-color .2s, box-shadow .2s;
}
.prompt-wrap:focus-within { border-color: rgba(124,92,255,.65); box-shadow: 0 0 0 3px rgba(124,92,255,.15); }
#prompt {
  width: 100%; min-height: 120px; resize: vertical;
  background: transparent; border: none; outline: none;
  color: var(--text); font: inherit; font-size: 14px; line-height: 1.7;
}
#prompt::placeholder { color: var(--text-faint); }
.prompt-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; color: var(--text-faint); font-size: 12px; }
.prompt-meta .near-limit { color: var(--warning); }
.mini-btn {
  background: none; border: none; cursor: pointer;
  color: var(--text-dim); font-size: 12px; padding: 2px 6px; border-radius: 6px;
}
.mini-btn:hover { color: var(--text); background: rgba(255,255,255,.06); }

/* 示例 chips */
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid rgba(124,92,255,.3);
  background: rgba(124,92,255,.08);
  color: #c9bcff;
  padding: 7px 11px; border-radius: 999px;
  cursor: pointer; font-size: 12px; line-height: 1.5; text-align: left;
  transition: all .18s;
}
.chip:hover { background: rgba(124,92,255,.18); border-color: rgba(124,92,255,.6); color: #fff; }

/* 参数表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 12px; color: var(--text-dim); }
select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  background: rgba(0,0,0,.32) url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238f98a8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center;
  border: 1px solid var(--panel-border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 11px 36px 11px 12px;
  font: inherit; font-size: 13px;
  cursor: pointer;
  transition: border-color .2s, box-shadow .2s;
}
select:focus { outline: none; border-color: rgba(124,92,255,.65); box-shadow: 0 0 0 3px rgba(124,92,255,.15); }

/* 生成按钮 */
.generate-btn {
  margin-top: 22px;
  width: 100%;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 20px;
  font: inherit; font-size: 16px; font-weight: 700;
  color: #fff; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none; border-radius: var(--radius-sm);
  box-shadow: 0 12px 32px rgba(89,92,255,.35);
  transition: transform .15s, box-shadow .2s, opacity .2s;
}
.generate-btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 18px 40px rgba(89,92,255,.5); }
.generate-btn:active:not(:disabled) { transform: translateY(0); }
.generate-btn:disabled { opacity: .6; cursor: not-allowed; }
.generate-btn.is-loading { animation: btnShimmer 1.4s linear infinite; background-size: 200% 100%; }
@keyframes btnShimmer {
  0% { background-position: 0 0; }
  100% { background-position: 200% 0; }
}
.footnote { margin-top: 12px; font-size: 12px; color: var(--text-faint); line-height: 1.7; }

/* ============ 右侧画廊 ============ */
.gallery-wrap {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 22px;
  min-height: 420px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}
.gallery-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.gallery-head h2 { font-size: 18px; }
.gallery-head p { color: var(--text-faint); font-size: 13px; margin-top: 4px; }
.ghost-btn {
  background: transparent; border: 1px solid var(--panel-border);
  color: var(--text-dim); font-size: 13px; padding: 8px 14px; border-radius: 999px; cursor: pointer;
  transition: all .2s;
}
.ghost-btn:hover { color: var(--danger); border-color: rgba(255,93,125,.4); background: rgba(255,93,125,.06); }

/* 状态条 */
.status {
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px;
  line-height: 1.6;
  word-break: break-all;
}
.status.hidden { display: none; }
.status.loading { background: rgba(124,92,255,.1); border: 1px solid rgba(124,92,255,.35); color: #d6ccff; }
.status.error { background: rgba(255,93,125,.1); border: 1px solid rgba(255,93,125,.4); color: #ffd7de; }
.status.success { background: rgba(61,220,151,.1); border: 1px solid rgba(61,220,151,.4); color: #c9ffe9; }
.status-icon { font-size: 18px; flex-shrink: 0; }

/* 空状态 */
.empty-state { text-align: center; padding: 70px 20px 60px; color: var(--text-faint); }
.empty-state.hidden { display: none; }
.empty-icon { font-size: 54px; margin-bottom: 14px; opacity: .8; }
.empty-state p { font-size: 15px; color: var(--text-dim); }
.empty-state .empty-sub { font-size: 13px; margin-top: 8px; }

/* 画廊卡片 */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card {
  background: rgba(0,0,0,.28);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: transform .2s, border-color .2s, box-shadow .2s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); border-color: rgba(124,92,255,.45); box-shadow: 0 14px 34px rgba(0,0,0,.5); }

.card-image-wrap { position: relative; background: #0b0d12; aspect-ratio: 1 / 1; overflow: hidden; }
/* 透明底 checkboard */
.card-image-wrap::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(45deg, rgba(255,255,255,.05) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.05) 75%),
    linear-gradient(45deg, rgba(255,255,255,.05) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.05) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
}
.card-image {
  position: relative; width: 100%; height: 100%; object-fit: contain; display: block;
}
.card-actions {
  position: absolute; top: 10px; right: 10px;
  display: flex; gap: 8px;
  opacity: 0; transform: translateY(-4px);
  transition: opacity .2s, transform .2s;
}
.card-image-wrap:hover .card-actions { opacity: 1; transform: translateY(0); }
.card-btn {
  width: 36px; height: 36px; border: none; cursor: pointer;
  background: rgba(0,0,0,.55); color: #fff; font-size: 16px;
  border-radius: 9px; backdrop-filter: blur(6px);
  transition: background .2s, transform .15s;
}
.card-btn:hover { background: rgba(0,0,0,.75); transform: scale(1.08); }

.card-body { padding: 12px; }
.card-meta { display: flex; gap: 6px; margin-bottom: 8px; }
.format-badge, .size-badge {
  font-size: 11px; padding: 3px 8px; border-radius: 999px;
  background: rgba(0,194,255,.1); color: #9ee7ff;
  border: 1px solid rgba(0,194,255,.25);
}
.size-badge { background: rgba(124,92,255,.1); color: #c9bcff; border-color: rgba(124,92,255,.28); }
.revised-prompt {
  font-size: 12.5px; color: var(--text-dim); line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

/* ============ 灯箱 ============ */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(5, 7, 12, .88);
  display: grid; place-items: center;
  padding: 40px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: fadeIn .2s ease;
}
.lightbox.hidden { display: none; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.lightbox img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 30px 80px rgba(0,0,0,.7);
  background: #0b0d12;
}
.lightbox-close {
  position: absolute; top: 22px; right: 26px;
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid var(--panel-border);
  background: rgba(255,255,255,.06);
  color: #fff; font-size: 20px; cursor: pointer;
  transition: all .2s;
}
.lightbox-close:hover { background: rgba(255,93,125,.2); border-color: rgba(255,93,125,.5); transform: rotate(90deg); }

/* ============ 页脚 ============ */
.site-footer {
  max-width: 1280px; margin: 30px auto 0;
  text-align: center; color: var(--text-faint); font-size: 12px;
}

/* ============ 响应式 ============ */
@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
  .panel { position: static; }
}
@media (max-width: 560px) {
  body { padding: 16px 10px 40px; }
  .site-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .gallery { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .field-full { grid-column: auto; }
  .lightbox { padding: 18px; }
}

/* ============ 参考图上传 ============ */
.upload-zone {
  margin-top: 10px;
  border: 1.5px dashed rgba(255,255,255,.16);
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,.22);
  cursor: pointer;
  transition: border-color .2s, background .2s, transform .15s;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(124,92,255,.08);
}
.upload-zone.drag-over { transform: scale(1.01); }
.upload-zone.has-images { border-style: solid; border-color: rgba(124,92,255,.35); }
.upload-inner { padding: 16px; text-align: center; }
.upload-icon { font-size: 22px; display: block; margin-bottom: 6px; }
.upload-inner p { font-size: 13px; color: var(--text-dim); }
.upload-inner .empty-sub { font-size: 11px; color: var(--text-faint); margin-top: 5px; }

.ref-previews { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.ref-previews:empty { display: none; }
.ref-preview-item {
  position: relative; width: 72px; height: 72px;
  border-radius: 10px; overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  background: #0b0d12;
}
.ref-preview-thumb { width: 100%; height: 100%; object-fit: cover; display: block; }
.ref-preview-remove {
  position: absolute; top: 3px; right: 3px;
  width: 20px; height: 20px; border: none; border-radius: 50%;
  background: rgba(0,0,0,.6); color: #fff; font-size: 11px; line-height: 1; cursor: pointer;
  display: grid; place-items: center;
  transition: background .2s, transform .15s;
}
.ref-preview-remove:hover { background: var(--danger); transform: scale(1.12); }
.ref-note { margin-top: 10px; font-size: 11.5px; color: var(--text-faint); line-height: 1.7; }
.ref-note code {
  font-family: Consolas, monospace; font-size: 11px;
  background: rgba(124,92,255,.12); color: #c9bcff;
  padding: 1px 5px; border-radius: 5px;
}

/* 模型徽章 */
.model-badge {
  font-size: 11px; padding: 3px 8px; border-radius: 999px;
  background: rgba(61,220,151,.1); color: #b5f5d9;
  border: 1px solid rgba(61,220,151,.28);
}