/* ==================== V2组件样式 - 按钮、卡片、表单 ==================== */

/* ==================== 按钮组件 ==================== */
.v2-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-bounce);
    text-decoration: none;
}

.v2-btn-primary {
    background: var(--gradient-blue);
    color: white;
    border-color: var(--accent-blue);
}

.v2-btn-primary:hover {
    background: transparent;
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.v2-btn-outline {
    background: transparent;
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}

.v2-btn-outline:hover {
    background: var(--gradient-blue);
    color: white;
    border-color: var(--accent-blue);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.v2-btn-lg {
    padding: 1rem 3rem;
    font-size: 1.1rem;
}

.v2-btn-sm {
    padding: 0.5rem 1.5rem;
    font-size: 0.9rem;
}

/* ==================== 卡片组件 ==================== */
.v2-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.v2-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-blue);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: 0;
}

.v2-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 50px rgba(52, 152, 219, 0.2);
}

.v2-card:hover::before {
    opacity: 0.05;
}

.v2-card > * {
    position: relative;
    z-index: 1;
}

/* 卡片标题 - 优化：纯白色 */
.v2-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: #ffffff;
}

/* 卡片描述 - 优化：浅灰色 */
.v2-card-desc {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
}

/* ==================== 区块标题 - 优化：纯白色 ==================== */
.v2-section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    position: relative;
    color: #ffffff;
}

.v2-section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-gold);
    margin: 1rem auto 0;
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.v2-section-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

/* ==================== 表单组件 ==================== */
.v2-form-group {
    margin-bottom: var(--spacing-md);
}

.v2-form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.v2-form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition-normal);
}

.v2-form-control:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

textarea.v2-form-control {
    min-height: 150px;
    resize: vertical;
}

/* ==================== 图标框 ==================== */
.v2-icon-box {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    transition: var(--transition-bounce);
}

.v2-icon-box i {
    font-size: 2.5rem;
    color: white;
}

.v2-card:hover .v2-icon-box {
    transform: scale(1.2) rotate(5deg);
}

/* ==================== 徽章 ==================== */
.v2-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    background: var(--gradient-blue);
    color: white;
}

.v2-badge-outline {
    background: transparent;
    border: 2px solid var(--accent-blue);
    color: var(--accent-blue);
}

/* ==================== 分隔线 ==================== */
.v2-divider {
    height: 2px;
    background: var(--gradient-blue);
    margin: var(--spacing-lg) 0;
    border-radius: 1px;
}

/* ==================== 加载动画 ==================== */
.v2-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(52, 152, 219, 0.2);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ==================== Toast通知 ==================== */
.v2-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    animation: slideInRight 0.3s ease;
}

.v2-toast-success {
    border-left: 4px solid #28a745;
}

.v2-toast-error {
    border-left: 4px solid #dc3545;
}

.v2-toast-info {
    border-left: 4px solid var(--accent-blue);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
    .v2-section-title {
        font-size: 2rem;
    }
    
    .v2-btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .v2-icon-box {
        width: 60px;
        height: 60px;
    }
    
    .v2-icon-box i {
        font-size: 2rem;
    }
}

/* ==================== Toast通知 ==================== */
.v2-toast {
    position: fixed;
    top: 100px;
    right: 20px;
    min-width: 300px;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 9999;
    animation: slideInRight 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.v2-toast-success {
    background: #10b981;
}

.v2-toast-error {
    background: #ef4444;
}

.v2-toast-info {
    background: #3b82f6;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}