/* QR 工坊 - 样式 */
:root {
  --primary: #4f46e5;
  --primary-2: #7c3aed;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f5f6fb;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 10px 28px -14px rgba(15, 23, 42, .14);
  --grad: linear-gradient(135deg, #4f46e5, #7c3aed);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.container { max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* 顶栏 */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-glyph { width: 34px; height: 34px; border-radius: 9px; background: var(--grad); display: grid; place-items: center; flex: none; }
.brand-glyph svg { width: 20px; height: 20px; }
.brand-text { font-size: 19px; font-weight: 800; letter-spacing: .5px; }
.brand-accent { color: var(--primary); }
.brand-sub { font-size: 12px; color: var(--muted); margin-left: 4px; }
.main-nav { display: flex; gap: 6px; background: #eef0f6; padding: 4px; border-radius: 12px; }
.nav-btn { border: 0; background: transparent; padding: 7px 16px; border-radius: 9px; font-size: 14px; color: var(--muted); cursor: pointer; font-weight: 600; transition: all .15s; font-family: inherit; }
.nav-btn:hover { color: var(--ink); }
.nav-btn.active { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(15, 23, 42, .12); }

/* 视图切换 */
.view { display: none; }
.view.active { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* hero */
.hero { padding: 34px 0 22px; text-align: center; }
.hero h1 { margin: 0 0 8px; font-size: 30px; letter-spacing: .5px; }
.hero p { margin: 0 auto; max-width: 660px; color: var(--muted); font-size: 15px; }

/* 工作区 */
.workspace { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 22px; align-items: start; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; }

/* 类型标签 */
.type-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.type-tab { border: 1px solid var(--line); background: #fff; padding: 8px 14px; border-radius: 999px; font-size: 13.5px; color: var(--muted); cursor: pointer; font-weight: 600; transition: all .15s; font-family: inherit; }
.type-tab:hover { border-color: var(--primary); color: var(--primary); }
.type-tab.active { background: var(--grad); border-color: transparent; color: #fff; box-shadow: 0 6px 14px -6px rgba(79, 70, 229, .6); }

.type-form { display: none; }
.type-form.active { display: block; animation: fade .2s ease; }

/* 表单 */
.field-label { display: block; font-size: 13px; font-weight: 700; color: #334155; margin: 0 0 6px; }
.input { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font-size: 14px; font-family: inherit; background: #fff; color: var(--ink); outline: none; transition: border .15s, box-shadow .15s; }
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79, 70, 229, .14); }
textarea.input { resize: vertical; }
.input.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid .full { grid-column: 1 / -1; }
.check { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--muted); margin-top: 8px; cursor: pointer; user-select: none; }
.check input { accent-color: var(--primary); width: 15px; height: 15px; }

/* 样式区 */
.style-block { margin-top: 22px; padding-top: 18px; border-top: 1px dashed var(--line); }
.block-title { margin: 0 0 14px; font-size: 15px; }
.style-row { margin-bottom: 14px; }
.style-label { display: block; font-size: 12.5px; font-weight: 700; color: #475569; margin-bottom: 7px; }
.style-label output { color: var(--primary); font-variant-numeric: tabular-nums; }

/* 分段按钮 */
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 6px; }
.seg-btn { border: 1px solid var(--line); background: #fff; padding: 7px 4px; border-radius: 9px; font-size: 12.5px; color: #475569; cursor: pointer; font-weight: 600; transition: all .15s; font-family: inherit; }
.seg-btn:hover { border-color: var(--primary); color: var(--primary); }
.seg-btn.active { background: var(--grad); border-color: transparent; color: #fff; }

/* 色板 */
.swatches { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 10px; }
.swatch { width: 27px; height: 27px; border-radius: 8px; border: 2px solid #fff; box-shadow: 0 0 0 1px var(--line); cursor: pointer; padding: 0; transition: transform .12s; }
.swatch:hover { transform: scale(1.12); }
.swatch.active { box-shadow: 0 0 0 2px var(--primary); }
.custom-colors { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.color-field { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--muted); }
.color-field input[type="color"] { width: 34px; height: 26px; border: 1px solid var(--line); border-radius: 7px; padding: 2px; background: #fff; cursor: pointer; }

/* 滑杆 */
input[type="range"] { width: 100%; accent-color: var(--primary); cursor: pointer; }

/* Logo */
.logo-controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.logo-thumb { position: relative; width: 42px; height: 42px; border-radius: 9px; overflow: hidden; border: 1px solid var(--line); }
.logo-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.logo-thumb button { position: absolute; top: 1px; right: 1px; width: 16px; height: 16px; line-height: 14px; border-radius: 50%; border: 0; background: rgba(15, 23, 42, .72); color: #fff; font-size: 11px; cursor: pointer; padding: 0; }
.hint { font-size: 12px; color: var(--muted); }

/* 按钮 */
.btn { border: 0; background: var(--grad); color: #fff; padding: 11px 22px; border-radius: 10px; font-size: 14px; font-weight: 700; cursor: pointer; box-shadow: 0 8px 18px -8px rgba(79, 70, 229, .65); transition: transform .12s, box-shadow .12s, opacity .2s; font-family: inherit; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 22px -8px rgba(79, 70, 229, .7); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn.ghost { background: #fff; color: var(--primary); border: 1px solid #c7d2fe; box-shadow: none; }
.btn.ghost:hover { border-color: var(--primary); }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 8px; box-shadow: none; cursor: pointer; display: inline-block; }

/* 预览 */
.preview-panel { position: sticky; top: 82px; }
.preview-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.preview-title { font-weight: 800; font-size: 15px; }
.badge { font-size: 12px; font-weight: 700; color: var(--primary); background: #eef2ff; border: 1px solid #e0e7ff; padding: 4px 10px; border-radius: 999px; }
.qr-stage { position: relative; border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 20px; display: grid; place-items: center; min-height: 330px; }
.qr-stage canvas, .qr-stage svg { max-width: 100%; height: auto; border-radius: 6px; transition: opacity .25s; }
.qr-stage.empty canvas, .qr-stage.empty svg { opacity: .18; }
.qr-empty { position: absolute; inset: 0; display: none; place-items: center; color: var(--muted); font-size: 14px; font-weight: 600; pointer-events: none; }
.qr-stage.empty .qr-empty { display: grid; }
.meta { margin-top: 14px; font-size: 12.5px; color: var(--muted); background: #f8fafc; border: 1px solid var(--line); border-radius: 9px; padding: 8px 12px; word-break: break-all; min-height: 20px; }
.meta.has { color: #334155; }
.actions { display: flex; gap: 10px; margin-top: 16px; }
.actions .btn { flex: 1; }
.stage-note { margin-top: 10px; text-align: center; font-size: 12px; color: #94a3b8; }

/* 特性卡片 */
.feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0 10px; }
.feature-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.feature-ico { font-size: 22px; }
.feature-card h4 { margin: 8px 0 4px; font-size: 15px; }
.feature-card p { margin: 0; font-size: 13px; color: var(--muted); }

/* 批量 */
.batch-panel { margin-top: 6px; }
.batch-toolbar { display: flex; align-items: center; gap: 12px; margin: 14px 0 4px; flex-wrap: wrap; }
.batch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(148px, 1fr)); gap: 14px; margin-top: 16px; }
.batch-cell { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 12px 10px; text-align: center; }
.batch-qr { width: 120px; height: 120px; margin: 0 auto; }
.batch-qr canvas, .batch-qr svg { width: 100% !important; height: 100% !important; }
.batch-name { margin-top: 8px; font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* API */
.api-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-bottom: 30px; }
.api-card h3 { display: flex; align-items: center; gap: 10px; margin: 0 0 6px; font-size: 17px; }
.method { background: var(--grad); color: #fff; font-size: 11.5px; font-weight: 800; padding: 3px 9px; border-radius: 6px; letter-spacing: .5px; }
.method.post { background: #059669; }
.api-card > p { margin: 0 0 12px; color: var(--muted); font-size: 13.5px; }
.api-card code { background: #eef2ff; color: var(--primary); padding: 1px 5px; border-radius: 5px; font-size: 12px; }
.code { background: #0f172a; color: #e2e8f0; border-radius: 10px; padding: 14px 16px; overflow-x: auto; font-size: 12.5px; line-height: 1.7; margin: 0; }
.code code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.c-url { color: #93c5fd; }
.c-k { color: #c4b5fd; }
.c-v { color: #fbbf24; }
.params { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 12.5px; }
.params th, .params td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); }
.params th { color: var(--muted); font-weight: 700; }
.params td:first-child { font-family: ui-monospace, monospace; font-weight: 700; color: var(--primary); white-space: nowrap; }
.api-notes { margin: 12px 0 0; padding-left: 18px; font-size: 13px; color: #475569; }
.api-notes li { margin-bottom: 6px; }
.api-notes code { background: #eef2ff; color: var(--primary); padding: 1px 5px; border-radius: 5px; font-size: 12px; }

/* footer */
.footer { margin-top: 40px; border-top: 1px solid var(--line); padding: 22px 0 34px; text-align: center; color: #94a3b8; font-size: 12.5px; }

/* toast */
.toast { position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%); background: rgba(15, 23, 42, .92); color: #fff; padding: 10px 20px; border-radius: 999px; font-size: 13.5px; z-index: 99; box-shadow: 0 10px 30px rgba(0, 0, 0, .25); animation: fade .2s ease; }

/* 电商码画布 */
.ecom-stage { border: 1px solid var(--line); border-radius: 12px; background: #0f172a; padding: 12px; display: grid; place-items: center; }
#ecom-canvas { width: 375px; height: 500px; border-radius: 10px; cursor: move; touch-action: none; box-shadow: 0 10px 30px -12px rgba(15, 23, 42, .55); background: #fff; }

/* 响应式 */
@media (max-width: 960px) {
  .workspace { grid-template-columns: 1fr; }
  .preview-panel { position: static; }
  .feature-row, .api-grid { grid-template-columns: 1fr; }
  .topbar-inner { flex-wrap: wrap; height: auto; padding: 10px 0; }
  .brand-sub { display: none; }
  .hero h1 { font-size: 24px; }
}
@media (max-width: 560px) {
  .form-grid { grid-template-columns: 1fr; }
  .main-nav { width: 100%; }
  .nav-btn { flex: 1; }
}