/* Subnet Calculator 工具特有 (.sn-*) */

.sn-card { padding: 16px 18px; margin-bottom: 14px; }

/* 输入行 */
.sn-input-row {
    display: grid;
    grid-template-columns: 2fr 1.5fr auto;
    gap: 10px;
    align-items: end;
    margin-bottom: 12px;
}
.sn-input-col { display: flex; flex-direction: column; gap: 4px; }
.sn-label {
    font: 600 12px var(--yst-font);
    color: var(--yst-text);
    letter-spacing: var(--yst-letter-spacing);
}
.sn-input { font-family: var(--yst-font-mono, monospace) !important; }
.sn-input-small { width: 100px; }
.sn-calc-btn { height: 40px !important; padding: 0 22px !important; }

/* 示例 */
.sn-examples {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 10px 12px;
    border: 1px dashed var(--yst-border);
    border-radius: 6px;
}
.sn-examples-label {
    font: 500 12px var(--yst-font);
    color: var(--yst-text-muted);
    margin-right: 4px;
}
.sn-example-btn {
    height: 26px;
    padding: 0 12px;
    background: transparent;
    border: 1px solid var(--yst-border);
    border-radius: 999px;
    color: var(--yst-text-2);
    font: 500 11px/1 var(--yst-font-mono, monospace);
    cursor: pointer;
    transition: all .15s;
}
.sn-example-btn:hover {
    background: var(--yst-brand-soft);
    border-color: var(--yst-brand);
    color: var(--yst-brand);
}

/* 关键 3 项结果 */
.sn-key-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}
.sn-key-item {
    background: linear-gradient(180deg, #fff 0%, #f5fafa 100%);
    border: 1px solid var(--yst-border);
    border-left: 3px solid var(--yst-brand);
    border-radius: 8px;
    padding: 12px 14px;
}
.sn-key-item.sn-key-highlight {
    background: linear-gradient(135deg, var(--yst-brand) 0%, #00aa9a 100%);
    border-color: var(--yst-brand);
    color: #fff;
}
.sn-key-label {
    font: 11px var(--yst-font);
    color: var(--yst-text-muted);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin-bottom: 4px;
}
.sn-key-highlight .sn-key-label { color: rgba(255,255,255,0.85); }
.sn-key-value {
    font: 700 18px/1.3 var(--yst-font-mono, monospace);
    color: var(--yst-text);
    word-break: break-all;
}
.sn-key-highlight .sn-key-value { color: #fff; font-size: 22px; }
.sn-key-range {
    font-size: 14px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}
.sn-range-sep {
    color: var(--yst-brand);
    font-weight: 700;
}

/* 详细信息 */
.sn-detail-toggle {
    display: flex;
    justify-content: center;
    margin-top: 8px;
    margin-bottom: 8px;
}
.sn-toggle-btn {
    height: 30px !important;
    padding: 0 16px !important;
    font-size: 12px !important;
}
.sn-detail-results {
    margin-top: 10px;
    padding-top: 12px;
    border-top: 1px dashed var(--yst-border);
}
.sn-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 8px;
}
.sn-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 8px 12px;
    background: var(--yst-bg-subtle);
    border-radius: 6px;
    font: 12px var(--yst-font-mono, monospace);
}
.sn-detail-label {
    color: var(--yst-text-muted);
    font-weight: 500;
    margin-right: 8px;
}
.sn-detail-value {
    color: var(--yst-text);
    font-weight: 600;
    word-break: break-all;
    text-align: right;
}

/* 高级入口 */
.sn-advanced-entry {
    text-align: center;
    margin: 14px 0;
}
.sn-advanced-btn {
    height: 38px !important;
    padding: 0 24px !important;
    font-weight: 600 !important;
}

.sn-advanced-section {
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* 划分 */
.sn-divide-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 10px;
    margin-bottom: 8px;
}
.sn-divide-controls .sn-label { margin-right: 4px; align-self: center; }

.sn-hint {
    background: var(--yst-bg-subtle);
    border-radius: 6px;
    padding: 8px 12px;
    font: 12px/1.5 var(--yst-font);
    color: var(--yst-text-muted);
    margin-bottom: 12px;
}
.sn-hint strong { color: var(--yst-brand); }

/* VLSM textarea */
.sn-vlsm-textarea {
    width: 100%;
    min-height: 130px !important;
    margin-top: 6px;
    margin-bottom: 8px;
}

/* 划分结果 */
.sn-results { margin-top: 14px; }
.sn-results-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 8px;
}
.sn-results-header h3 {
    font: 700 14px var(--yst-font);
    color: var(--yst-text);
    margin: 0;
}
.sn-result-count {
    font: 12px var(--yst-font-mono, monospace);
    color: var(--yst-text-muted);
}
.sn-subnet-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 480px;
    overflow-y: auto;
}
.sn-subnet-list .subnet-item {
    background: var(--yst-bg-subtle);
    border: 1px solid var(--yst-border);
    border-left: 3px solid var(--yst-brand);
    border-radius: 6px;
    padding: 10px 12px;
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 10px;
    font: 12px/1.5 var(--yst-font-mono, monospace);
}
.sn-subnet-list .subnet-name,
.sn-subnet-list .subnet-index {
    color: var(--yst-brand);
    font-weight: 700;
}
.sn-subnet-list .subnet-detail {
    color: var(--yst-text-2);
    word-break: break-all;
}

/* 速查 */
.sn-ref-header { display: flex; justify-content: space-between; align-items: center; }
.sn-ref-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 8px;
    margin-top: 8px;
}
.sn-ref-item {
    background: var(--yst-bg-subtle);
    border: 1px solid var(--yst-border);
    border-radius: 6px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.sn-ref-cidr {
    font: 700 18px/1 var(--yst-font-mono, monospace);
    color: var(--yst-brand);
    min-width: 40px;
}
.sn-ref-info {
    font: 11px/1.5 var(--yst-font-mono, monospace);
    color: var(--yst-text);
}
.sn-ref-info > div:first-child {
    font-weight: 600;
    margin-bottom: 2px;
}
.sn-ref-hosts {
    color: var(--yst-text-muted);
    font-size: 10px;
}

/* 移动端 */
@media (max-width: 768px) {
    .sn-input-row { grid-template-columns: 1fr; }
    .sn-calc-btn { width: 100%; }
    .sn-divide-controls { flex-direction: column; align-items: stretch; }
    .sn-divide-controls .sn-input-small { width: 100%; }
}