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

:root {
    /* 主题颜色 - 二次元卡牌风格 */
    --primary-color: #FF6B9D;
    --primary-hover: #FF8FAB;
    --secondary-color: #C678DD;
    --danger-color: #FF6B9D;
    --success-color: #10b981;
    --warning-color: #FFD93D;
    
    /* 中性色 - 明亮背景 */
    --bg-dark: #FFF5F7;
    --bg-medium: rgba(255, 255, 255, 0.95);
    --bg-light: rgba(255, 245, 250, 0.9);
    --text-primary: #4A4A4A;
    --text-secondary: #7A7A7A;
    --text-muted: #9CA3AF;
    
    /* 边框和阴影 - 柔和效果 */
    --border-color: rgba(255, 107, 157, 0.2);
    --shadow-sm: 0 2px 4px rgba(255, 107, 157, 0.1);
    --shadow-md: 0 4px 12px rgba(255, 107, 157, 0.15);
    --shadow-lg: 0 6px 20px rgba(255, 107, 157, 0.2);
    --shadow-xl: 0 10px 30px rgba(255, 107, 157, 0.25);
    
    /* 渐变色 - 二次元配色 */
    --gradient-primary: linear-gradient(135deg, #FF6B9D 0%, #C678DD 50%, #66D9EF 100%);
    --gradient-secondary: linear-gradient(135deg, #FFB6C1 0%, #FF69B4 100%);
    --gradient-success: linear-gradient(135deg, #10B981 0%, #34D399 100%);
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* 圆角 - 更圆润 */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* 过渡 */
    --transition: all 0.3s ease;
}

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #FFF5F7 0%, #F0E6FF 50%, #E6F7FF 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 星光粒子背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, #FFB6C1, transparent),
        radial-gradient(2px 2px at 60% 70%, #66D9EF, transparent),
        radial-gradient(1px 1px at 50% 50%, #C678DD, transparent),
        radial-gradient(1px 1px at 80% 10%, #FFD93D, transparent);
    background-size: 300px 300px;
    animation: sparkle 15s linear infinite;
    pointer-events: none;
    opacity: 0.4;
    z-index: 0;
}

@keyframes sparkle {
    from { transform: translateY(0); }
    to { transform: translateY(-300px); }
}

/* 按钮样式 */
.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-medium);
    border-color: var(--primary-color);
}

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

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-block {
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

.btn-large {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
}

.btn-icon {
    padding: 0.5rem 0.75rem;
}

/* 输入框样式 */
.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-medium);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: var(--transition);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

input::placeholder {
    color: var(--text-muted);
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--bg-medium);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

.modal-content.large {
    max-width: 800px;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.modal-header h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-header p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.modal-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-footer {
    padding: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* 卡片样式 */
.card {
    background: var(--bg-medium);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

/* 徽章样式 */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary-color);
    color: white;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* 隐藏元素 */
.hidden {
    display: none !important;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

/* 加载动画 */
.spinner {
    border: 3px solid var(--bg-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 提示信息 */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem;
    background: var(--bg-dark);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.tooltip:hover::after {
    opacity: 1;
}

/* 响应式 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-width: none;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
}

/* 动画 */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

.bounce {
    animation: bounce 1s infinite;
}