/* ===== 千川ROI计算器 页面样式（遵循站点统一设计语言） ===== */

/* 复用共享背景元素（来自 style.css）：.hero-bg / .bg-gradient / .bg-grid / .floating-shapes / .shape */

/* 计算器 Hero */
.calc-hero {
  position: relative;
  padding: 150px 0 80px;
  overflow: hidden;
}
.calc-hero-content { position: relative; z-index: 2; max-width: 820px; }
.calc-hero-title {
  font-family: var(--font-heading);
  font-size: 52px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}
.calc-hero-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.calc-hero-desc b { color: var(--color-gold-light); }

/* 计算器主体 */
.calculator-section { padding: 40px 0 90px; position: relative; z-index: 2; }
.roi-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: start;
}

/* 左侧输入面板 */
.roi-input, .roi-result {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 26px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
}
.panel-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.toolbar-title { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--color-text); }
.toolbar-title i { color: var(--color-primary); }
.formula-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: var(--color-primary);
  padding: 7px 14px; border-radius: 20px; font-size: 13px; cursor: pointer;
  transition: all var(--transition-normal);
}
.formula-toggle:hover { background: rgba(139, 92, 246, 0.18); }

/* 公式说明 */
.formula-box {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 18px; margin-bottom: 20px;
}
.formula-title { font-weight: 600; margin-bottom: 12px; color: var(--color-text); }
.formula-icon { margin-right: 6px; }
.formula-item { display: flex; align-items: baseline; gap: 10px; padding: 7px 0; font-size: 13.5px; border-bottom: 1px dashed rgba(255,255,255,0.06); }
.formula-label { flex: 0 0 110px; color: var(--color-text-secondary); }
.formula-eq { color: var(--color-primary); font-weight: 700; }
.formula-expr { color: var(--color-text); flex: 1; }
.formula-item.final .formula-expr { color: var(--color-gold-light); font-weight: 600; }
.formula-note { margin-top: 12px; font-size: 13px; color: var(--color-text-secondary); background: rgba(139,92,246,0.08); border-left: 3px solid var(--color-primary); padding: 10px 12px; border-radius: 6px; line-height: 1.7; }
.formula-note.danger-note { background: rgba(239,68,68,0.06); border-left-color: #ef4444; }

/* 模式切换 */
.roi-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.roi-tab {
  flex: 1; padding: 12px; border-radius: var(--radius-md);
  background: rgba(255,255,255,0.04); border: 1px solid var(--glass-border);
  color: var(--color-text-secondary); font-weight: 600; cursor: pointer; transition: all var(--transition-normal);
}
.roi-tab:hover { background: rgba(255,255,255,0.08); }
.roi-tab.is-active { background: var(--gradient-primary); color: #fff; border-color: transparent; box-shadow: 0 4px 14px rgba(139,92,246,0.3); }

/* 表单 */
.form-section { margin-bottom: 20px; }
.form-section .section-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 600; color: var(--color-text); margin-bottom: 14px;
  padding-bottom: 8px; border-bottom: 1px solid var(--glass-border);
}
.form-section .section-title i { color: var(--color-primary); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-item { display: flex; flex-direction: column; gap: 7px; }
.form-label { font-size: 13.5px; color: var(--color-text-secondary); display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.label-hint { font-size: 11.5px; color: var(--color-text-muted); }
.input-wrap { position: relative; display: flex; align-items: center; }
.input-wrap i { position: absolute; left: 14px; color: var(--color-text-muted); font-size: 14px; pointer-events: none; }
.calc-input {
  width: 100%; padding: 12px 14px 12px 40px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border); border-radius: var(--radius-md);
  color: var(--color-text); font-size: 15px; font-family: var(--font-body);
  transition: border-color var(--transition-fast);
}
.calc-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(139,92,246,0.15); }
.input-suffix { position: absolute; right: 14px; color: var(--color-text-muted); font-size: 13px; pointer-events: none; }
.form-desc { font-size: 11.5px; color: var(--color-text-muted); line-height: 1.5; margin: 0; }

/* 批量表格 */
.batch-table { display: flex; flex-direction: column; gap: 16px; }
.batch-row { background: rgba(15,23,42,0.45); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: 16px; }
.batch-row-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.batch-name { flex: 1; padding: 8px 12px; background: rgba(139,92,246,0.08); border: 1px solid rgba(139,92,246,0.2); border-radius: var(--radius-sm); color: var(--color-text); font-weight: 600; }
.batch-del { background: rgba(239,68,68,0.12); border: 1px solid rgba(239,68,68,0.25); color: #ef4444; width: 34px; height: 34px; border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition-fast); }
.batch-del:hover { background: rgba(239,68,68,0.22); }
.batch-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.batch-field { display: flex; flex-direction: column; gap: 5px; }
.batch-field label { font-size: 12px; color: var(--color-text-muted); }
.batch-field .input-wrap { position: relative; }
.batch-field .calc-input { padding: 9px 10px 9px 12px; font-size: 13.5px; }
.batch-field .input-wrap i { display: none; }
.batch-field .input-suffix { right: 10px; font-size: 12px; }
.batch-row-footer { display: flex; align-items: center; margin-top: 12px; padding-top: 12px; border-top: 1px dashed rgba(255,255,255,0.08); font-size: 13px; }
.max-ad-label { color: var(--color-text-muted); }
.max-ad-value { color: var(--color-gold-light); font-weight: 700; margin-left: 6px; }
.max-ad-value.invalid { color: var(--color-text-muted); }
.batch-footer { display: flex; align-items: center; gap: 14px; margin-top: 16px; }
.btn-sm { padding: 9px 16px; font-size: 13px; }
.row-count { font-size: 13px; color: var(--color-text-muted); }

/* ===== 右侧结果 ===== */
.result-hero { position: relative; overflow: hidden; border-radius: var(--radius-xl); padding: 26px; margin-bottom: 22px; background: rgba(15,23,42,0.6); border: 1px solid var(--glass-border); transition: border-color var(--transition-normal); }
.result-hero.ready { border-color: rgba(139,92,246,0.4); }
.result-hero.safe { border-color: rgba(16,185,129,0.5); }
.result-hero.danger { border-color: rgba(239,68,68,0.5); }
.rh-bg-icon { position: absolute; right: 18px; top: 14px; font-size: 90px; color: rgba(255,255,255,0.03); }
.rh-content { position: relative; z-index: 1; }
.rh-label { font-size: 15px; color: var(--color-text-secondary); font-weight: 600; }
.rh-sub-label-inline { font-size: 12px; color: var(--color-text-muted); font-weight: 400; margin-left: 6px; }
.rh-value-row { display: flex; align-items: center; gap: 16px; margin: 8px 0 18px; }
.rh-value { font-family: var(--font-heading); font-size: 56px; font-weight: 700; line-height: 1; }
.rh-grade-badge { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 20px; border: 1px solid; font-weight: 700; font-size: 14px; }
.safety-bar { margin-bottom: 16px; }
.safety-bar-track { height: 8px; background: rgba(255,255,255,0.08); border-radius: 4px; overflow: hidden; }
.safety-bar-fill { height: 100%; border-radius: 4px; transition: width var(--transition-slow); }
.safety-bar-labels { display: flex; justify-content: space-between; font-size: 11px; color: var(--color-text-muted); margin-top: 6px; }
.rh-sub { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.rh-sub-item { display: flex; flex-direction: column; gap: 2px; }
.rh-sub-label { font-size: 12px; color: var(--color-text-muted); }
.rh-sub-value { font-size: 18px; font-weight: 700; color: var(--color-text); }
.rh-sub-divider { width: 1px; height: 28px; background: var(--glass-border); }
.copy-btn { display: inline-flex; align-items: center; gap: 6px; margin-left: auto; background: rgba(255,255,255,0.05); border: 1px solid var(--glass-border); color: var(--color-text-secondary); padding: 8px 14px; border-radius: var(--radius-md); cursor: pointer; font-size: 13px; transition: all var(--transition-fast); }
.copy-btn:hover { background: rgba(255,255,255,0.1); }

/* 千川对比 */
.compare-card, .grade-card, .suggest-card, .scenario-card { background: rgba(15,23,42,0.45); border: 1px solid var(--glass-border); border-radius: var(--radius-xl); padding: 22px; margin-bottom: 22px; }
.detail-title, .gc-title, .sc-title { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 700; color: var(--color-text); margin-bottom: 14px; }
.detail-title i, .gc-title i, .sc-title i { color: var(--color-primary); }
.compare-input-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.compare-label { font-size: 13.5px; color: var(--color-text-secondary); white-space: nowrap; }
.compare-input { max-width: 240px; }
.compare-result { display: grid; grid-template-columns: 1fr; gap: 14px; }
.compare-status { display: flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 700; }
.compare-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.compare-metric { background: rgba(255,255,255,0.04); border: 1px solid var(--glass-border); border-radius: var(--radius-md); padding: 12px; text-align: center; }
.compare-metric.highlight { border-width: 2px; }
.metric-label { display: block; font-size: 12px; color: var(--color-text-muted); margin-bottom: 6px; }
.metric-value { font-size: 18px; font-weight: 700; color: var(--color-text); }
.compare-tip { display: flex; align-items: center; gap: 8px; color: var(--color-text-muted); font-size: 13.5px; }

/* 等级卡 */
.gc-desc { font-size: 13px; color: var(--color-text-secondary); margin-bottom: 16px; }
.gc-scale { margin-bottom: 16px; }
.gc-scale-bar { position: relative; height: 12px; border-radius: 6px; background: rgba(255,255,255,0.08); margin-bottom: 10px; }
.gc-scale-fill { height: 100%; border-radius: 6px; background: linear-gradient(-90deg, #059669 0%, #10b981 25%, #84cc16 50%, #f59e0b 70%, #f97316 85%, #ef4444 100%); transition: width var(--transition-slow); }
.gc-scale-marker { position: absolute; top: 50%; transform: translate(-50%, -50%); width: 2px; height: 20px; background: #fff; border-left: 3px solid #fff; margin-top: -4px; }
.gc-scale-marker span { position: absolute; top: -22px; left: 50%; transform: translateX(-50%); font-size: 12px; font-weight: 700; white-space: nowrap; }
.gc-scale-labels { display: flex; justify-content: space-between; gap: 4px; font-size: 11px; color: var(--color-text-muted); flex-wrap: wrap; }
.gc-label b { color: var(--color-text); }
.gc-label.safe b { color: #10b981; }
.gc-label.warn b { color: #f59e0b; }
.gc-label.danger b { color: #f97316; }
.gc-label.critical b { color: #ef4444; }
.gc-current { border: 1px solid; border-radius: var(--radius-md); padding: 14px; }
.gc-current-header { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.gc-current-grade { width: 30px; height: 30px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; }
.gc-current-text { font-size: 16px; font-weight: 700; }
.gc-current-tip { font-size: 13px; color: var(--color-text-secondary); line-height: 1.7; }

/* 调优建议 */
.suggest-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.suggest-item { display: flex; flex-direction: column; gap: 3px; padding: 12px 14px; border-radius: var(--radius-md); background: rgba(255,255,255,0.04); border-left: 3px solid var(--color-primary); }
.suggest-item.good { border-left-color: #10b981; }
.suggest-item.price-up { border-left-color: #8B5CF6; }
.suggest-item.cost { border-left-color: #f59e0b; }
.suggest-item.sign { border-left-color: #10b981; }
.suggest-item.shipping { border-left-color: #6366F1; }
.suggest-text { font-weight: 700; color: var(--color-text); }
.suggest-impact { font-size: 12.5px; color: var(--color-text-muted); }

/* 情景模拟 */
.scenario-table { display: flex; flex-direction: column; gap: 8px; }
.scenario-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; align-items: center; padding: 11px 14px; border-radius: var(--radius-md); background: rgba(255,255,255,0.04); border: 1px solid var(--glass-border); font-size: 13.5px; }
.scenario-row.is-profit { border-left: 3px solid #10b981; }
.scenario-row.is-loss { border-left: 3px solid #ef4444; }
.scenario-roi { font-weight: 700; color: var(--color-text); }
.scenario-adcost { color: var(--color-text-secondary); }
.scenario-profit { font-weight: 600; }
.scenario-row.is-profit .scenario-profit { color: #10b981; }
.scenario-row.is-loss .scenario-profit { color: #ef4444; }

/* ===== 响应式 ===== */
@media (max-width: 980px) {
  .roi-grid { grid-template-columns: 1fr; }
  .calc-hero-title { font-size: 40px; }
}
@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
  .batch-fields { grid-template-columns: 1fr 1fr; }
  .compare-metrics { grid-template-columns: 1fr 1fr; }
  .calc-hero-title { font-size: 32px; }
  .rh-value { font-size: 44px; }
  .scenario-row { grid-template-columns: 1fr; gap: 2px; }
}