/* ========================================
   CIDR 计算器工具样式 (严格 .cidr- 前缀隔离)
   ======================================== */

/* 全局布局 */
html, body { height: 100%; overflow-y: auto; overflow-x: hidden; margin: 0; }
body { display: flex; align-items: flex-start; justify-content: center; padding-top: 70px; padding-bottom: 70px; min-height: 100vh; }

/* 输入区域 */
.cidr-input-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: stretch;
    margin-bottom: 20px;
}

.cidr-input-wrap {
    flex: 1;
    min-width: 260px;
    position: relative;
}

.cidr-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-input, #0a0a0f);
    border: 1px solid var(--border-color, #333);
    border-radius: var(--radius-md, 8px);
    color: #fff;
    font-family: 'JetBrains Mono', 'Fira Code', monospace, sans-serif;
    font-size: 16px;
    outline: none;
    transition: all 0.2s;
}

.cidr-input:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.cidr-error {
    color: var(--primary-color);
    font-size: 12px;
    margin-top: 8px;
    display: none;
    font-weight: 500;
}

/* 计算按钮 */
.cidr-btn {
    padding: 14px 32px;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md, 8px);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    height: fit-content;
}

.cidr-btn:hover {
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transform: translateY(-1px);
}

.cidr-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* 预设按钮 */
.cidr-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: flex-start;
    margin-bottom: 16px;
}

.cidr-tip-label {
    font-size: 13px;
    color: var(--text-muted, #888);
    font-weight: 600;
}

.cidr-preset-btn {
    padding: 6px 14px;
    background: var(--bg-input, #0a0a0f);
    border: 1px solid var(--border-color, #333);
    color: var(--text-muted, #888);
    border-radius: 20px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.cidr-preset-btn:hover {
    color: #fff;
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
}

.cidr-tip {
    font-size: 12px;
    color: #666;
    line-height: 1.6;
    border-top: 1px solid var(--border-color, #333);
    padding-top: 12px;
    margin-top: 0;
}

/* 结果网格 */
.cidr-result-wrapper {
    margin-top: 24px;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.cidr-result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.cidr-result-item {
    background: var(--bg-input, #0a0a0f);
    border: 1px solid var(--border-color, #333);
    border-radius: var(--radius-md, 8px);
    padding: 16px;
    transition: 0.3s;
    position: relative;
    overflow-y: auto; 
    overflow-x: hidden;
}

.cidr-result-item:hover {
    border-color: #3b82f6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.cidr-result-item.full-width {
    grid-column: 1 / -1;
}

.cidr-label {
    font-size: 12px;
    color: var(--text-muted, #888);
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cidr-value {
    font-size: 16px;
    color: #fff;
    font-family: 'JetBrains Mono', 'Fira Code', monospace, sans-serif;
    font-weight: 600;
    word-break: break-all;
}

.cidr-value.highlight {
    color: #3b82f6;
    font-size: 18px;
}

/* 二进制详情 */
.cidr-details-panel {
    margin-top: 24px;
    animation: fadeIn 0.4s ease;
}

.cidr-details-header h3 {
    color: #fff;
    margin: 0 0 16px 0;
    font-size: 15px;
    border-bottom: 1px solid var(--border-color, #333);
    padding-bottom: 10px;
}

.cidr-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color, #333);
}

.cidr-detail-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.cidr-detail-label {
    color: var(--text-muted, #888);
    font-size: 13px;
    font-weight: 500;
    min-width: 100px;
}

.cidr-detail-val {
    font-family: 'JetBrains Mono', 'Fira Code', monospace, sans-serif;
    color: #fff;
    font-weight: 500;
    text-align: right;
    font-size: 13px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cidr-binary {
    color: #00d2ff;
    font-size: 11px;
    letter-spacing: 1px;
    margin-top: 2px;
}

/* 响应式适配 */
@media (max-width: 600px) {
    .cidr-input-row { flex-direction: column; }
    .cidr-btn { width: 100%; justify-content: center; }
    .cidr-result-grid { grid-template-columns: 1fr; }
}