/* ======================================================================
 *  Offer 对比计算器 /tools/offer-compare
 *  依赖 home.css 全局变量 + tool-detail.css 公共类，支持黑夜模式
 * ====================================================================== */

[hidden] { display: none !important; }

/* ---------- 输入区 ---------- */
.oc-inputs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}
.oc-card {
    background: var(--c-bg-card);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 22px;
}
.oc-card--a { border-top: 3px solid var(--c-primary); }
.oc-card--b { border-top: 3px solid var(--c-accent-orange); }
.oc-card-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
}
.oc-card-head h2 { font-size: 16px; font-weight: 800; letter-spacing: -0.01em; }
.oc-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 800;
    color: #fff;
}
.oc-card--a .oc-badge { background: var(--c-primary); }
.oc-card--b .oc-badge { background: var(--c-accent-orange); }

.oc-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 13px 14px;
}
.oc-field { min-width: 0; }
.oc-field > label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--c-text-sub);
    margin-bottom: 6px;
}
.oc-wrap { position: relative; display: flex; align-items: center; }
.oc-input {
    width: 100%;
    height: 41px;
    padding: 0 34px 0 12px;
    font-size: 13.5px;
    font-family: inherit;
    color: var(--c-text);
    background: var(--c-surface-soft);
    border: 1px solid var(--c-border);
    border-radius: 11px;
    outline: none;
    transition: border-color 0.16s ease, box-shadow 0.16s ease;
    -moz-appearance: textfield;
}
.oc-input::-webkit-outer-spin-button,
.oc-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.oc-input:focus {
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px var(--c-primary-soft);
}
.oc-input--pre { padding-left: 30px; }
.oc-select {
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    padding-right: 30px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a93a8' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 11px center;
}
.oc-pre {
    position: absolute;
    left: 12px;
    font-size: 12.5px;
    color: var(--c-text-muted);
    pointer-events: none;
}
.oc-suf {
    position: absolute;
    right: 12px;
    font-size: 12px;
    color: var(--c-text-muted);
    pointer-events: none;
}

/* ---------- 操作按钮 ---------- */
.oc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 22px;
}
.oc-actions .btn { min-width: 160px; }

/* ---------- 结果区 ---------- */
.oc-result { margin-bottom: 20px; }
.oc-result-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 200px;
    text-align: center;
    color: var(--c-text-muted);
    font-size: 13.5px;
    line-height: 1.8;
}
.oc-result-empty .emoji { font-size: 46px; opacity: 0.75; }

.oc-result-body { animation: ocFade 0.28s ease; }
@keyframes ocFade {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: none; }
}

.oc-verdict {
    padding: 16px 18px;
    border-radius: 14px;
    background: var(--c-primary-soft);
    border: 1px dashed rgba(0, 102, 255, 0.3);
    font-size: 13.5px;
    line-height: 1.8;
    color: var(--c-text-sub);
    margin-bottom: 16px;
}
.oc-verdict b { color: var(--c-text); }

.oc-duel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}
.oc-duel-item {
    padding: 18px 20px;
    border-radius: 14px;
    border: 1px solid var(--c-border);
    background: var(--c-surface-soft);
    position: relative;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.oc-duel-item.is-win {
    border-color: var(--c-accent-green);
    box-shadow: 0 0 0 3px rgba(0, 200, 150, 0.14);
}
.oc-duel-item.is-win::after {
    content: "更优";
    position: absolute;
    top: 12px;
    right: 14px;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: var(--c-accent-green);
    padding: 2px 8px;
    border-radius: 999px;
}
.oc-duel-name { font-size: 12.5px; font-weight: 700; color: var(--c-text-sub); margin-bottom: 8px; }
.oc-duel-num { font-size: 26px; font-weight: 800; letter-spacing: -0.03em; color: var(--c-text); margin-bottom: 5px; }
.oc-duel-key { font-size: 11.5px; color: var(--c-text-muted); }

/* ---------- 对比表 ---------- */
.oc-table-scroll {
    overflow-x: auto;
    border: 1px solid var(--c-border);
    border-radius: 12px;
    -webkit-overflow-scrolling: touch;
}
.oc-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    min-width: 620px;
}
.oc-table thead th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--c-text-sub);
    background: var(--c-surface-soft);
    border-bottom: 1px solid var(--c-border);
    white-space: nowrap;
}
.oc-table tbody td {
    padding: 12px 16px;
    color: var(--c-text-sub);
    border-bottom: 1px solid var(--c-border);
    white-space: nowrap;
}
.oc-table tbody tr:last-child td { border-bottom: none; }
.oc-table .oc-td-key b { display: block; color: var(--c-text); font-weight: 700; font-size: 13px; }
.oc-table .oc-td-key small { display: block; font-size: 11px; color: var(--c-text-muted); margin-top: 2px; }
.oc-table td.oc-win {
    color: var(--c-accent-green);
    font-weight: 800;
    background: rgba(0, 200, 150, 0.06);
}
.oc-td-flag { width: 60px; }
.oc-flag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 800;
    color: #fff;
}
.oc-flag--a { background: var(--c-primary); }
.oc-flag--b { background: var(--c-accent-orange); }
.oc-flag--tie { background: var(--c-text-muted); }

.oc-note {
    margin-top: 16px;
    font-size: 12.5px;
    line-height: 1.8;
    color: var(--c-text-sub);
    padding: 13px 15px;
    border-radius: 12px;
    background: var(--c-surface-soft);
    border: 1px solid var(--c-border);
}
.oc-note b { color: var(--c-text); }

/* ---------- 免责 / 简介 ---------- */
.oc-disclaim {
    font-size: 12px;
    line-height: 1.85;
    color: var(--c-text-muted);
    background: var(--c-surface-soft);
    border: 1px solid var(--c-border);
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 26px;
}
.oc-info { margin-bottom: 26px; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
    .oc-inputs { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
    .oc-card { padding: 18px; }
    .oc-grid { grid-template-columns: 1fr; }
    .oc-duel { grid-template-columns: 1fr; }
    .oc-actions .btn { flex: 1; min-width: 0; }
    .oc-duel-num { font-size: 22px; }
}

/* ============ 黑夜模式 ============ */
[data-theme="dark"] .oc-input { background: rgba(255, 255, 255, 0.04); }
[data-theme="dark"] .oc-input option { background: #131c31; color: #e5e9f0; }
[data-theme="dark"] .oc-verdict {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.32);
}
[data-theme="dark"] .oc-duel-item,
[data-theme="dark"] .oc-table thead th,
[data-theme="dark"] .oc-note,
[data-theme="dark"] .oc-disclaim { background: rgba(255, 255, 255, 0.03); }
[data-theme="dark"] .oc-table td.oc-win {
    color: #34d399;
    background: rgba(0, 200, 150, 0.10);
}