/**
 * B2 Group Buy Plugin - Frontend Common Styles
 * 前台公共组件样式：按钮、卡片、进度条、倒计时等
 */

/* ==================== 基础设置 ==================== */
.group-buy-container {
    font-family: var(--gb-font-sans, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
    color: var(--gb-text-primary, #1e293b);
}

.group-buy-container * {
    box-sizing: border-box;
}

/* ==================== 容器布局 ==================== */
.gb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.gb-container-sm {
    max-width: 800px;
}

.gb-container-lg {
    max-width: 1400px;
}

/* ==================== 按钮样式 ==================== */
.gb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    text-decoration: none;
    border: none;
    border-radius: var(--gb-radius-md, 12px);
    cursor: pointer;
    transition: all var(--gb-transition-normal, 250ms);
    white-space: nowrap;
}

.gb-btn:focus {
    outline: none;
}

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

/* 主要按钮 - 渐变 */
.gb-btn-primary {
    background: var(--gb-purple-gradient, linear-gradient(135deg, #667eea 0%, #764ba2 100%));
    color: #fff;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.gb-btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

/* 成功按钮 */
.gb-btn-success {
    background: var(--gb-success-gradient, linear-gradient(135deg, #10b981 0%, #34d399 100%));
    color: #fff;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.gb-btn-success:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

/* 警告按钮 */
.gb-btn-warning {
    background: var(--gb-warning-gradient, linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%));
    color: #fff;
}

/* 危险按钮 */
.gb-btn-danger {
    background: var(--gb-danger-gradient, linear-gradient(135deg, #ef4444 0%, #f87171 100%));
    color: #fff;
}

/* 轮廓按钮 */
.gb-btn-outline {
    background: transparent;
    border: 2px solid currentColor;
    color: var(--gb-primary, #6366f1);
}

.gb-btn-outline:hover:not(:disabled) {
    background: var(--gb-primary, #6366f1);
    border-color: var(--gb-primary, #6366f1);
    color: #fff;
}

/* 按钮尺寸 */
.gb-btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.gb-btn-lg {
    padding: 16px 32px;
    font-size: 17px;
}

/* 全宽按钮 */
.gb-btn-block {
    display: flex;
    width: 100%;
}

/* ==================== 卡片样式 ==================== */
.gb-card {
    background: #fff;
    border-radius: var(--gb-radius-lg, 16px);
    box-shadow: var(--gb-shadow-md, 0 4px 6px -1px rgba(0, 0, 0, 0.1));
    overflow: hidden;
    transition: all var(--gb-transition-normal, 250ms);
}

.gb-card:hover {
    box-shadow: var(--gb-shadow-lg, 0 10px 15px -3px rgba(0, 0, 0, 0.1));
    transform: translateY(-4px);
}

.gb-card-image {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.gb-card-body {
    padding: 20px;
}

.gb-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gb-text-primary, #1e293b);
    margin: 0 0 8px;
    line-height: 1.4;
}

.gb-card-text {
    font-size: 14px;
    color: var(--gb-text-secondary, #64748b);
    margin: 0;
}

.gb-card-footer {
    padding: 16px 20px;
    border-top: 1px solid #f1f5f9;
    background: #fafafa;
}

/* ==================== 进度条 ==================== */
.gb-progress {
    height: 8px;
    background: #e5e7eb;
    border-radius: var(--gb-radius-full, 9999px);
    overflow: hidden;
}

.gb-progress-bar {
    height: 100%;
    background: var(--gb-purple-gradient, linear-gradient(135deg, #667eea 0%, #764ba2 100%));
    border-radius: var(--gb-radius-full, 9999px);
    transition: width var(--gb-transition-slow, 350ms);
}

.gb-progress-bar.success {
    background: var(--gb-success-gradient);
}

.gb-progress-bar.warning {
    background: var(--gb-warning-gradient);
}

.gb-progress-bar.danger {
    background: var(--gb-danger-gradient);
}

/* 带标签的进度条 */
.gb-progress-wrapper {
    margin-bottom: 16px;
}

.gb-progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 14px;
}

.gb-progress-text {
    color: var(--gb-text-secondary, #64748b);
}

.gb-progress-value {
    font-weight: 600;
    color: var(--gb-primary, #6366f1);
}

/* ==================== 倒计时 ==================== */
.gb-countdown {
    display: flex;
    align-items: center;
    gap: 8px;
}

.gb-countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 12px;
    background: #f8fafc;
    border-radius: var(--gb-radius-sm, 8px);
    min-width: 50px;
}

.gb-countdown-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--gb-text-primary, #1e293b);
    line-height: 1.2;
}

.gb-countdown-label {
    font-size: 11px;
    color: var(--gb-text-muted, #94a3b8);
    text-transform: uppercase;
}

.gb-countdown-separator {
    font-size: 20px;
    font-weight: 600;
    color: var(--gb-text-muted, #94a3b8);
}

/* 紧凑倒计时 */
.gb-countdown-compact {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    color: var(--gb-danger, #ef4444);
    font-weight: 500;
}

.gb-countdown-compact .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
}

/* ==================== 状态标签 ==================== */
.gb-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--gb-radius-full, 9999px);
}

.gb-status-active {
    background: var(--gb-success-light, #d1fae5);
    color: #059669;
}

.gb-status-pending {
    background: var(--gb-warning-light, #fef3c7);
    color: #d97706;
}

.gb-status-completed {
    background: var(--gb-primary-light, #eef2ff);
    color: var(--gb-primary, #6366f1);
}

.gb-status-failed {
    background: var(--gb-danger-light, #fee2e2);
    color: #dc2626;
}

.gb-status-expired {
    background: #f1f5f9;
    color: #64748b;
}

/* ==================== 价格显示 ==================== */
.gb-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.gb-price-current {
    font-size: 28px;
    font-weight: 700;
    color: var(--gb-danger, #ef4444);
}

.gb-price-currency {
    font-size: 16px;
}

.gb-price-original {
    font-size: 16px;
    color: var(--gb-text-muted, #94a3b8);
    text-decoration: line-through;
}

.gb-price-discount {
    padding: 2px 8px;
    font-size: 12px;
    font-weight: 600;
    background: var(--gb-danger-light, #fee2e2);
    color: var(--gb-danger, #ef4444);
    border-radius: var(--gb-radius-sm, 8px);
}

/* ==================== 头像列表 ==================== */
.gb-avatars {
    display: flex;
    align-items: center;
}

.gb-avatar {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    max-width: 36px;
    max-height: 36px;
    border-radius: 50%;
    border: 2px solid #fff;
    object-fit: cover;
    margin-left: -8px;
    box-shadow: var(--gb-shadow-sm);
    flex-shrink: 0;
}

.gb-avatar:first-child {
    margin-left: 0;
}

.gb-avatar-more {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    border-radius: 50%;
    background: #f1f5f9;
    border: 2px solid #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--gb-text-secondary, #64748b);
    margin-left: -8px;
    flex-shrink: 0;
}

/* ==================== 面包屑 ==================== */
.gb-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--gb-text-secondary, #64748b);
    margin-bottom: 20px;
}

.gb-breadcrumb a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

.gb-breadcrumb a:hover {
    color: var(--gb-primary, #6366f1);
}

.gb-breadcrumb-separator {
    color: var(--gb-text-muted, #94a3b8);
}

.gb-breadcrumb-current {
    color: var(--gb-text-primary, #1e293b);
    font-weight: 500;
}

/* ==================== 消息提示 ==================== */
.gb-message {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    border-radius: var(--gb-radius-md, 12px);
    margin-bottom: 16px;
}

.gb-message-icon {
    flex-shrink: 0;
    font-size: 20px;
}

.gb-message-content {
    flex: 1;
}

.gb-message-success {
    background: var(--gb-success-light, #d1fae5);
    color: #065f46;
}

.gb-message-warning {
    background: var(--gb-warning-light, #fef3c7);
    color: #92400e;
}

.gb-message-error {
    background: var(--gb-danger-light, #fee2e2);
    color: #991b1b;
}

.gb-message-info {
    background: var(--gb-info-light, #cffafe);
    color: #155e75;
}

/* ==================== 加载状态 ==================== */
.gb-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 40px;
    color: var(--gb-text-secondary, #64748b);
}

.gb-loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #e5e7eb;
    border-top-color: var(--gb-primary, #6366f1);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* 按钮加载状态 */
.gb-btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

.gb-btn.loading::before {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
}

/* ==================== 空状态 ==================== */
.gb-empty {
    text-align: center;
    padding: 60px 20px;
}

.gb-empty-icon {
    font-size: 64px;
    color: var(--gb-text-muted, #94a3b8);
    margin-bottom: 16px;
    opacity: 0.5;
}

.gb-empty-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--gb-text-primary, #1e293b);
    margin-bottom: 8px;
}

.gb-empty-description {
    font-size: 15px;
    color: var(--gb-text-secondary, #64748b);
    max-width: 400px;
    margin: 0 auto 24px;
}

/* ==================== 分页 ==================== */
.gb-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 32px;
}

.gb-pagination-item {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--gb-radius-sm, 8px);
    background: #fff;
    color: var(--gb-text-primary, #1e293b);
    text-decoration: none;
    box-shadow: var(--gb-shadow-sm);
    transition: all var(--gb-transition-fast, 150ms);
}

.gb-pagination-item:hover:not(.active):not(.disabled) {
    background: var(--gb-primary, #6366f1);
    color: #fff;
}

.gb-pagination-item.active {
    background: var(--gb-purple-gradient);
    color: #fff;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.gb-pagination-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==================== 网格布局 ==================== */
.gb-grid {
    display: grid;
    gap: 24px;
}

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

.gb-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.gb-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .gb-grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .gb-container {
        padding: 0 16px;
    }

    .gb-grid-3,
    .gb-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .gb-countdown-item {
        padding: 6px 10px;
        min-width: 45px;
    }

    .gb-countdown-value {
        font-size: 20px;
    }

    .gb-price-current {
        font-size: 24px;
    }

    .gb-btn {
        padding: 10px 20px;
    }
}

@media (max-width: 480px) {
    .gb-grid-2,
    .gb-grid-3,
    .gb-grid-4 {
        grid-template-columns: 1fr;
    }

    .gb-pagination {
        flex-wrap: wrap;
    }

    .gb-countdown {
        gap: 4px;
    }
}