/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局背景填充，确保小窗口横向滚动时左右区域完全覆盖 */
html {
    background: var(--bg-primary);
    min-height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-secondary);
}

.btn-outline {
    background-color: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--accent-primary);
    color: white;
}

.btn-danger {
    background: var(--accent-danger);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: var(--accent-danger);
    filter: brightness(0.9);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: 4px;
    background-color: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: var(--bg-input);
    color: var(--text-primary);
}

.btn-icon.btn-danger:hover {
    background: var(--accent-danger);
    color: white;
}

.btn-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 4px;
    background-color: transparent;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-close:hover {
    background: var(--bg-input);
    color: var(--text-primary);
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-primary);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-input);
    color: var(--text-primary);
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--border-active);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group input.error,
.form-group textarea.error,
.form-group select.error {
    border-color: var(--accent-danger);
}

.error-message {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--accent-danger);
}

/* 警告框样式 */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-danger);
    border: 1px solid var(--accent-danger);
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--accent-success);
    border: 1px solid var(--accent-success);
}

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal {
    background: var(--bg-modal);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    box-shadow: var(--shadow-card);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    backdrop-filter: var(--backdrop-blur);
}

.modal-small {
    max-width: 400px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--border-primary);
}

.modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    padding: 20px 24px;
}

.modal-body .warning {
    color: var(--accent-danger);
    font-size: 13px;
    margin-top: 8px;
}

.modal-body .info {
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 8px;
}

.modal form {
    padding: 20px 24px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding: 20px 24px 24px;
    border-top: 1px solid var(--border-primary);
    margin-top: 4px;
}

/* 加载状态 */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-primary);
    border-top: 3px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

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

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state h3 {
    margin-bottom: 8px;
    color: var(--text-primary);
}

.empty-state p {
    margin-bottom: 24px;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .modal {
        margin: 16px;
        max-width: none;
    }
    
    .modal-header,
    .modal form,
    .modal-body,
    .modal-actions {
        padding-left: 16px;
        padding-right: 16px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 16px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 12px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .modal-actions {
        flex-direction: column;
    }
    
    .modal-actions .btn {
        width: 100%;
        justify-content: center;
        min-height: 48px;
        padding: 14px 20px !important;
        font-size: 16px;
        font-weight: 600;
    }
    
    /* 创建/确认按钮在下方，更容易点击 */
    .modal-actions .btn-primary {
        order: 2;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
        transition: all 0.3s ease;
    }
    
    .modal-actions .btn-primary:hover:not(:disabled) {
        background: linear-gradient(135deg, #5568d3 0%, #6a3f91 100%);
        box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
        transform: translateY(-2px);
    }
    
    .modal-actions .btn-primary:active:not(:disabled) {
        transform: translateY(0);
        box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
    }
    
    /* 取消按钮在上方 */
    .modal-actions .btn-outline {
        order: 1;
        background: transparent;
        border: 2px solid var(--border-primary);
        color: var(--text-secondary);
    }
    
    .modal-actions .btn-outline:hover:not(:disabled) {
        background: var(--bg-secondary);
        border-color: var(--border-hover);
        color: var(--text-primary);
    }
}