/* ============================================
   运费成本模拟器 — 页面专属样式
   ============================================ */

/* ── 快递方案卡片列表 ── */
.carrier-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 8px;
}

.carrier-card {
    border: 1.5px solid var(--border-color, #e5e7eb);
    border-radius: 10px;
    padding: 14px;
    background: var(--card-bg, #fff);
    position: relative;
    transition: border-color 0.2s;
}

.carrier-card.active {
    border-color: var(--carrier-color, #6366f1);
    background: color-mix(in srgb, var(--carrier-color, #6366f1) 4%, #fff);
}

.carrier-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.carrier-color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    background: var(--carrier-color, #6366f1);
}

.carrier-name-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary, #1f2937);
    background: transparent;
    min-width: 0;
}

.carrier-remove-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: #fee2e2;
    color: #ef4444;
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex-shrink: 0;
    transition: background 0.2s;
    margin-left: auto;
}

.carrier-remove-btn:hover { background: #fecaca; }

.carrier-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.carrier-field {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.carrier-field label {
    font-size: 11px;
    color: var(--text-muted, #9ca3af);
    font-weight: 500;
}

.carrier-field .input-wrapper {
    border-radius: 6px;
}

.carrier-field .calc-input {
    font-size: 12px;
    padding: 6px 8px;
}

.carrier-field .input-unit {
    font-size: 11px;
    padding: 0 7px;
    min-height: 30px;
}

/* ── 添加快递方案按钮 ── */
.add-carrier-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 8px;
    border: 1.5px dashed var(--border-color, #d1d5db);
    border-radius: 8px;
    background: transparent;
    color: var(--primary-color, #6366f1);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 4px;
}

.add-carrier-btn:hover {
    border-color: var(--primary-color, #6366f1);
    background: rgba(99, 102, 241, 0.04);
}

/* ── 区域分布 ── */
.region-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.region-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
}

.region-info {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.region-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary, #1f2937);
}

.region-provinces {
    font-size: 11px;
    color: var(--text-muted, #9ca3af);
    line-height: 1.3;
}

.region-pct-wrapper {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 110px;
}

.region-pct-input {
    width: 56px;
    padding: 6px 8px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 6px;
    font-size: 13px;
    text-align: right;
    color: var(--text-primary, #1f2937);
    background: var(--card-bg, #fff);
    transition: border-color 0.2s;
}

.region-pct-input:focus {
    outline: none;
    border-color: var(--primary-color, #6366f1);
    box-shadow: 0 0 0 2px rgba(99,102,241,0.1);
}

.region-pct-unit {
    font-size: 12px;
    color: var(--text-muted, #9ca3af);
}

/* 分布合计提示 */
.pct-total-hint {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    font-size: 12px;
    padding: 6px 10px;
    border-radius: 6px;
    margin-top: 4px;
    transition: all 0.2s;
}

.pct-total-hint.ok {
    background: #f0fdf4;
    color: #059669;
    border: 1px solid #bbf7d0;
}

.pct-total-hint.warn {
    background: #fffbeb;
    color: #d97706;
    border: 1px solid #fde68a;
}

.pct-total-hint .total-val {
    font-weight: 700;
}

/* ── 结果：最优方案推荐横幅 ── */
.best-carrier-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
    border: 1.5px solid #6ee7b7;
    border-radius: 12px;
    margin-bottom: 20px;
}

.best-carrier-banner i {
    font-size: 24px;
    color: #10b981;
    flex-shrink: 0;
}

.best-banner-text h4 {
    font-size: 13px;
    font-weight: 600;
    color: #065f46;
    margin: 0 0 2px;
}

.best-banner-text p {
    font-size: 12px;
    color: #059669;
    margin: 0;
}

.best-cost-badge {
    margin-left: auto;
    background: #10b981;
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    padding: 6px 16px;
    border-radius: 20px;
    white-space: nowrap;
    flex-shrink: 0;
}

/* ── 方案结果卡片网格 ── */
.carrier-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.carrier-result-card {
    background: var(--card-bg, #fff);
    border: 2px solid var(--border-color, #e5e7eb);
    border-radius: 12px;
    padding: 14px;
    text-align: center;
    position: relative;
    transition: transform 0.2s;
}

.carrier-result-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    border-radius: 10px 10px 0 0;
    background: var(--c-color, #6366f1);
}

.carrier-result-card.best-card {
    border-color: #10b981;
    background: linear-gradient(135deg, #f0fdf4, #fff);
}

.carrier-result-card:hover { transform: translateY(-2px); }

.cr-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary, #6b7280);
    margin-bottom: 6px;
    line-height: 1.3;
}

.cr-avg-cost {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary, #1f2937);
    line-height: 1.1;
    margin-bottom: 2px;
}

.cr-unit {
    font-size: 11px;
    color: var(--text-muted, #9ca3af);
}

.cr-discount {
    display: inline-block;
    margin-top: 6px;
    font-size: 11px;
    padding: 2px 8px;
    background: var(--bg-secondary, #f3f4f6);
    border-radius: 4px;
    color: var(--text-secondary, #6b7280);
}

.best-badge {
    position: absolute;
    top: -1px; right: 8px;
    background: #10b981;
    color: #fff;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 0 0 6px 6px;
}

/* ── 区域明细 Tabs ── */
.carrier-detail-tabs {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.carrier-detail-tab {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border-color, #e5e7eb);
    background: var(--card-bg, #fff);
    color: var(--text-secondary, #6b7280);
    transition: all 0.2s;
}

.carrier-detail-tab.active {
    background: var(--primary-color, #6366f1);
    border-color: var(--primary-color, #6366f1);
    color: #fff;
}

/* ── 图表 ── */
.shipping-chart {
    width: 100%;
    height: 280px;
}

/* ── 空态提示面板 ── */
.calc-hint-panel {
    background: var(--card-bg, #fff);
    border-radius: 12px;
    border: 1px solid var(--border-color, #e5e7eb);
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-self: start;
}

.hint-hero {
    text-align: center;
    padding: 20px 0;
}

.hint-hero i {
    font-size: 48px;
    color: #6366f1;
    opacity: 0.6;
    display: block;
    margin-bottom: 12px;
}

.hint-hero h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary, #1f2937);
    margin: 0 0 8px;
}

.hint-hero p {
    font-size: 13px;
    color: var(--text-muted, #9ca3af);
    margin: 0;
    line-height: 1.6;
}

.hint-tips {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.hint-tip {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary, #6b7280);
}

.hint-tip i {
    color: #10b981;
    font-size: 15px;
    flex-shrink: 0;
    margin-top: 1px;
}

.hint-rates {
    background: var(--bg-secondary, #f9fafb);
    border-radius: 8px;
    padding: 14px 16px;
}

.hint-rates-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary, #6b7280);
    margin: 0 0 10px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.hint-rate-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.hint-rate-list span {
    font-size: 12px;
    padding: 3px 10px;
    background: #fff;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 20px;
    color: var(--text-secondary, #6b7280);
}

/* ── 响应式 ── */
@media (max-width: 768px) {
    .carrier-fields {
        grid-template-columns: 1fr;
    }
    .carrier-results {
        grid-template-columns: repeat(2, 1fr);
    }
    .best-cost-badge {
        font-size: 15px;
        padding: 5px 12px;
    }
}