/*
  input: _shared/tokens.css 变量
  output: playground-brief 外壳 + 4 变体独立样式
  pos: playground-brief/playground.css
*/

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #FAFAFC;
  color: var(--ql-text);
  -webkit-font-smoothing: antialiased;
}

/* ============ Hero ============ */
.pg-hero {
  padding: 56px 48px 48px;
  background: radial-gradient(ellipse at top left, var(--ql-ours-bg-subtle), transparent 70%), #FAFAFC;
  border-bottom: 1px solid var(--ql-border-light);
}
.pg-hero__top { max-width: 1200px; margin: 0 auto; }
.pg-hero__badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--ql-ours-accent);
  color: #fff;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  border-radius: 9999px;
  text-transform: uppercase;
  margin-bottom: 18px;
  box-shadow: 0 2px 8px rgba(107, 58, 93, 0.25);
}
.pg-hero__title {
  margin: 0 0 10px;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ql-text);
  line-height: 1.25;
}
.pg-hero__desc {
  margin: 0;
  font-size: 15px;
  color: var(--ql-text-secondary);
  line-height: 1.65;
  max-width: 700px;
}

/* ============ Main 外壳 ============ */
.pg-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 48px 80px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* ============ Variant 卡片 ============ */
.pg-card {
  background: #fff;
  border-radius: 24px;
  box-shadow:
    0 1px 2px rgba(16, 24, 40, 0.04),
    0 12px 32px rgba(107, 58, 93, 0.06);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.pg-card:hover {
  box-shadow:
    0 2px 4px rgba(16, 24, 40, 0.05),
    0 24px 56px rgba(107, 58, 93, 0.1);
  transform: translateY(-2px);
}

.pg-card__head {
  padding: 28px 32px 22px;
  border-bottom: 1px solid var(--ql-border-light);
  background: linear-gradient(180deg, #fff, #FBF9FC);
}
.pg-card__meta {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.pg-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 9999px;
  font-variant-numeric: tabular-nums;
}
.pg-tag--bold {
  background: var(--ql-ours-accent);
  color: #fff;
}
.pg-tag--dimension {
  background: var(--ql-ours-bg-subtle);
  color: var(--ql-ours-accent);
}
.pg-card__title {
  margin: 0 0 8px;
  font-size: 21px;
  font-weight: 700;
  color: var(--ql-text);
  letter-spacing: -0.005em;
}
.pg-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ql-text-secondary);
}

.pg-canvas {
  padding: 60px 32px;
  background: #FDFCFE;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 180px;
}

/* ============ Footer ============ */
.pg-foot {
  padding: 32px 48px 48px;
  text-align: center;
  color: var(--ql-text-muted);
  font-size: 13px;
}

/* ============================================================ */
/*                        V1 智能搜索条                          */
/* ============================================================ */
.v1-wrap {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.v1-searchbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: #fff;
  border: 1.5px solid var(--ql-border);
  border-radius: 9999px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.v1-searchbar:focus-within {
  border-color: var(--ql-ours-accent);
  box-shadow: 0 0 0 4px var(--ql-ours-glow), 0 4px 16px rgba(107, 58, 93, 0.08);
}
.v1-icon {
  width: 20px;
  height: 20px;
  color: var(--ql-text-muted);
  flex-shrink: 0;
}
.v1-searchbar:focus-within .v1-icon { color: var(--ql-ours-accent); }
.v1-input {
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 15px;
  font-family: inherit;
  color: var(--ql-text);
  min-width: 0;
}
.v1-input::placeholder { color: var(--ql-text-placeholder); }
.v1-hint {
  padding: 3px 8px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ql-text-muted);
  background: var(--ql-surface-alt);
  border: 1px solid var(--ql-border-light);
  border-radius: 6px;
  flex-shrink: 0;
}
.v1-suggestions {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 0 22px;
  flex-wrap: wrap;
}
.v1-sug-label {
  font-size: 12px;
  color: var(--ql-text-muted);
  font-weight: 500;
}
.v1-sug {
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 500;
  border: 1px solid var(--ql-border-light);
  background: #fff;
  border-radius: 9999px;
  color: var(--ql-text);
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}
.v1-sug:hover {
  border-color: var(--ql-ours-accent);
  color: var(--ql-ours-accent);
  background: var(--ql-ours-bg-subtle);
}
.v1-sug--new {
  color: var(--ql-text-muted);
  border-style: dashed;
}
.v1-sug--new:hover {
  color: var(--ql-ours-accent);
  border-style: solid;
  background: var(--ql-ours-bg-subtle);
}

/* ============================================================ */
/*                      V2 下划线双栏                            */
/* ============================================================ */
.v2-wrap {
  width: 100%;
  max-width: 880px;
  display: flex;
  gap: 40px;
}
.v2-field {
  flex: 0 0 260px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.v2-field--grow { flex: 1; }
.v2-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ql-text-secondary);
  letter-spacing: 0.04em;
}
.v2-opt {
  font-weight: 400;
  color: var(--ql-text-placeholder);
}
.v2-input {
  border: 0;
  border-bottom: 1.5px solid var(--ql-border);
  background: transparent;
  padding: 8px 0 10px;
  font-size: 15px;
  font-family: inherit;
  outline: 0;
  color: var(--ql-text);
  transition: border-color 0.15s, border-bottom-width 0.15s;
}
.v2-input::placeholder { color: var(--ql-text-placeholder); }
.v2-input:focus {
  border-bottom-color: var(--ql-ours-accent);
  border-bottom-width: 2px;
  padding-bottom: 9px;
}

/* ============================================================ */
/*                        V3 卡片表单                            */
/* ============================================================ */
.v3-card {
  width: 100%;
  max-width: 560px;
  background: #fff;
  border: 1px solid var(--ql-border-light);
  border-radius: 20px;
  padding: 28px 32px 24px;
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.03),
    0 12px 28px rgba(107, 58, 93, 0.08);
}
.v3-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ql-text);
}
.v3-icon {
  color: var(--ql-ours-accent);
  font-size: 18px;
}
.v3-field {
  margin-bottom: 16px;
}
.v3-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ql-text);
  margin-bottom: 8px;
}
.v3-btn-select {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px;
  background: var(--ql-surface-alt);
  border: 1px solid var(--ql-border-light);
  border-radius: 10px;
  font-size: 14px;
  color: var(--ql-text-secondary);
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}
.v3-btn-select:hover {
  border-color: var(--ql-ours-accent);
  background: #fff;
}
.v3-field-hint {
  display: block;
  margin-top: 6px;
  font-size: 11.5px;
  color: var(--ql-text-muted);
  line-height: 1.5;
}
.v3-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--ql-surface-alt);
  border: 1px solid var(--ql-border-light);
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.55;
  font-family: inherit;
  resize: vertical;
  outline: 0;
  color: var(--ql-text);
  transition: all 0.15s;
  min-height: 58px;
}
.v3-textarea::placeholder { color: var(--ql-text-placeholder); }
.v3-textarea:focus {
  border-color: var(--ql-ours-accent);
  background: #fff;
  box-shadow: 0 0 0 3px var(--ql-ours-glow);
}
.v3-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 20px;
}
.v3-cta {
  padding: 10px 22px;
  background: var(--ql-ours-accent);
  color: #fff;
  border: 0;
  border-radius: 9999px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 0 2px 8px rgba(107, 58, 93, 0.25);
  transition: all 0.15s;
  letter-spacing: 0.02em;
}
.v3-cta:hover {
  box-shadow: 0 4px 14px rgba(107, 58, 93, 0.35);
  transform: translateY(-1px);
}

/* ============================================================ */
/*                      V4 精致双胶囊                            */
/* ============================================================ */
.v4-wrap {
  width: 100%;
  max-width: 720px;
  display: flex;
  gap: 12px;
}
.v4-project,
.v4-note {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 52px;
  padding: 0 20px;
  border-radius: 9999px;
  transition: all 0.2s;
  background: #fff;
  border: 1.5px solid var(--ql-border-light);
}
.v4-project {
  flex: 0 0 260px;
  background: linear-gradient(135deg, var(--ql-ours-bg-subtle), #fff 70%);
  border-color: var(--ql-ours-border);
}
.v4-project:hover,
.v4-note:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(107, 58, 93, 0.08);
}
.v4-project:focus-within,
.v4-note:focus-within {
  border-color: var(--ql-ours-accent);
  box-shadow: 0 0 0 3px var(--ql-ours-glow), 0 4px 14px rgba(107, 58, 93, 0.1);
  transform: translateY(-1px);
}
.v4-note { flex: 1; }
.v4-icon {
  width: 16px;
  height: 16px;
  color: var(--ql-ours-accent);
  flex-shrink: 0;
}
.v4-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ql-text);
  flex-shrink: 0;
  letter-spacing: 0.02em;
}
.v4-input {
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 14px;
  font-family: inherit;
  color: var(--ql-text);
  min-width: 0;
}
.v4-input::placeholder { color: var(--ql-text-placeholder); }