/* 弹层样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    border: 1px solid #444;
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    animation: modalSlideIn 0.3s ease-out;
    overflow: hidden;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: 20px 24px 10px;
    border-bottom: 1px solid #444;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    color: white;
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: #999;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.modal-body {
    padding: 24px;
    color: white;
    text-align: center;
    font-size: 1.1rem;
}

.modal-footer {
    padding: 10px 24px 20px;
    display: flex;
    justify-content: center;
    gap: 12px;
}

.modal-btn-ok {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    min-width: 100px;
}

.modal-btn-ok:hover {
    background: linear-gradient(135deg, #0056b3, #004085);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
}

/* 成功状态 */
.modal-success .modal-title {
    color: #28a745;
}

.modal-success .modal-btn-ok {
    background: linear-gradient(135deg, #28a745, #1e7e34);
}

.modal-success .modal-btn-ok:hover {
    background: linear-gradient(135deg, #1e7e34, #155724);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

/* 错误状态 */
.modal-error .modal-title {
    color: #dc3545;
}

.modal-error .modal-btn-ok {
    background: linear-gradient(135deg, #dc3545, #c82333);
}

.modal-error .modal-btn-ok:hover {
    background: linear-gradient(135deg, #c82333, #a71e2a);
    box-shadow: 0 5px 15px rgba(220, 53, 69, 0.3);
}

/* 加载动画 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1001;
    color: white;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 输入框错误状态 */
.error-border {
    border: 2px solid #dc3545 !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}