/**
 * 子网计算器样式
 */

.subnet-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 输入区域 */
.input-section {
    background: var(--color-bg-secondary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--color-border-light);
}

.input-row {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.input-group {
    flex: 1;
}

.input-group.cidr-group {
    flex: 0 0 100px;
}

.input-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.input-field {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    font-family: var(--font-mono);
    color: var(--color-text);
    background: var(--color-bg);
    transition: var(--transition);
}

.input-field:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.input-field.error {
    border-color: var(--color-error);
}

.input-actions {
    display: flex;
    gap: 10px;
}

/* 结果区域 */
.result-section {
    background: var(--color-bg-secondary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--color-border-light);
}

.result-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.result-card {
    background: var(--color-bg);
    border-radius: 10px;
    padding: 14px 16px;
    border: 1px solid var(--color-border-light);
    position: relative;
}

.result-card.primary {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, var(--color-bg) 100%);
}

.result-card.highlight {
    background: linear-gradient(135deg, var(--color-primary) 0%, #8b5cf6 100%);
    border-color: transparent;
}

.result-card.highlight .result-label {
    color: rgba(255, 255, 255, 0.9);
}

.result-card.highlight .result-value {
    color: white;
}

.result-label {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.result-value {
    font-size: 14px;
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-text);
}

.result-value.large {
    font-size: 18px;
}

.result-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 8px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 11px;
    color: var(--color-text-secondary);
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
}

.result-card:hover .result-copy {
    opacity: 1;
}

.result-copy:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* IP范围 */
.range-section {
    background: var(--color-bg);
    border-radius: 10px;
    padding: 16px;
    border: 1px solid var(--color-border-light);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.range-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.range-value {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.btn-copy-range {
    padding: 8px 16px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 12px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-copy-range:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* 二进制区域 */
.binary-section {
    background: var(--color-bg);
    border-radius: 10px;
    padding: 16px;
    border: 1px solid var(--color-border-light);
}

.binary-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.binary-hint {
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-light);
}

.binary-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.binary-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 8px 12px;
    background: var(--color-bg-secondary);
    border-radius: 6px;
}

.binary-label {
    width: 80px;
    font-size: 13px;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.binary-value {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-text);
    letter-spacing: 0.5px;
}

.binary-value .network-bit {
    color: var(--color-primary);
    font-weight: 600;
}

.binary-value .host-bit {
    color: var(--color-success);
}

/* CIDR快速选择 */
.cidr-section {
    background: var(--color-bg-secondary);
    border-radius: 12px;
    padding: 16px 20px;
    border: 1px solid var(--color-border-light);
}

.cidr-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.cidr-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.cidr-btn {
    padding: 6px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 13px;
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.cidr-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.cidr-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* 私有IP */
.private-ip-section {
    background: var(--color-bg-secondary);
    border-radius: 12px;
    padding: 16px 20px;
    border: 1px solid var(--color-border-light);
}

.private-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.private-hint {
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-light);
    margin-left: 8px;
}

.private-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 12px;
}

.private-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: 10px;
    padding: 14px 16px;
    cursor: pointer;
    transition: var(--transition);
}

.private-item:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.private-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.private-range {
    font-size: 14px;
    font-family: var(--font-mono);
    color: var(--color-primary);
    margin-bottom: 2px;
}

.private-hosts {
    font-size: 12px;
    color: var(--color-text-light);
}

/* 响应式 */
@media (max-width: 900px) {
    .input-row {
        flex-direction: column;
    }

    .input-group.cidr-group {
        flex: 1;
    }

    .result-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .private-grid {
        grid-template-columns: 1fr;
    }

    .range-section {
        flex-direction: column;
        align-items: flex-start;
    }

    .range-value {
        width: 100%;
    }
}

@media (max-width: 500px) {
    .result-grid {
        grid-template-columns: 1fr;
    }
}