/**
 * components.css - 组件样式
 * 包含：按钮、卡片、表单、标签等可复用组件
 */

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    color: white;
}

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

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-light);
    color: var(--text-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

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

.btn-block {
    width: 100%;
}

/* ========== 搜索框 ========== */
.search-box {
    display: flex;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 6px;
    transition: all var(--transition);
    box-shadow: var(--shadow-lg);
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.search-input {
    flex: 1;
    padding: 16px 20px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    outline: none;
}

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

.search-btn {
    padding: 16px 32px;
    background: var(--gradient-1);
    border: none;
    border-radius: var(--radius);
    color: white;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: all var(--transition-fast);
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

/* ========== 工具卡片 ========== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-5);
    margin-bottom: var(--space-12);
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.5s ease backwards;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.tool-card:hover {
    border-color: var(--primary-light);
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.tool-header {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-3);
}

.tool-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.tool-icon.gradient-1 { background: var(--gradient-1); }
.tool-icon.gradient-2 { background: var(--gradient-2); }
.tool-icon.gradient-3 { background: var(--gradient-3); }

.tool-info {
    flex: 1;
    min-width: 0;
}

.tool-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tool-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.tool-tag {
    padding: 3px 8px;
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    font-size: 11px;
    color: var(--text-muted);
}

.tool-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--space-3);
}

.tool-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-3);
    border-top: 1px solid var(--border);
}

.tool-rating {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.tool-rating .stars {
    color: var(--warning);
}

.tool-link {
    padding: 8px 16px;
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--primary-light);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.tool-card:hover .tool-link {
    background: var(--gradient-1);
    color: white;
}

/* 徽章 */
.featured-badge,
.new-badge,
.hot-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    color: white;
}

.featured-badge { background: var(--gradient-3); }
.new-badge { background: var(--success); }
.hot-badge { background: var(--danger); }

/* ========== 标签 ========== */
.tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.tag {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-light);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.tag.active {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
}

/* ========== 章节标题 ========== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border);
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.section-title .icon {
    font-size: 24px;
}

.view-all {
    color: var(--primary-light);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--transition-fast);
}

.view-all:hover {
    gap: 10px;
}

/* ========== 统计卡片 ========== */
.stats {
    display: flex;
    justify-content: center;
    gap: var(--space-10);
    margin-top: var(--space-16);
    padding: var(--space-8);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ========== 英雄区域 ========== */
.hero {
    padding: var(--space-16) var(--space-6) var(--space-10);
    text-align: center;
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

.hero h1 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, #f8fafc 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h1 .highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-10);
}

.search-container {
    max-width: 700px;
    margin: 0 auto;
}

/* ========== 工具卡片 ========== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.tool-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: fadeInUp 0.5s ease-out forwards;
    opacity: 0;
    text-decoration: none;
    color: inherit;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tool-card:hover {
    transform: translateY(-6px);
    border-color: rgba(102, 126, 234, 0.4);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(102, 126, 234, 0.1);
    background: var(--bg-card-hover);
}

.tool-card .tool-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tool-badge.badge-hot {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    color: white;
}

.tool-badge.badge-new {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.tool-card-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.tool-card-logo {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.tool-card-logo.gradient-1 { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.tool-card-logo.gradient-2 { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.tool-card-logo.gradient-3 { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.tool-card-logo.gradient-4 { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }
.tool-card-logo.gradient-5 { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }
.tool-card-logo.gradient-6 { background: linear-gradient(135deg, #30cfd0 0%, #330867 100%); }

.tool-card-info {
    flex: 1;
    min-width: 0;
}

.tool-card-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tool-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tool-card-tag {
    padding: 4px 10px;
    background: rgba(102, 126, 234, 0.15);
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.tool-card-desc {
    flex: 1;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.tool-card-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.tool-card-rating .stars {
    color: #fbbf24;
    letter-spacing: 1px;
}

.tool-card-btn {
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(232, 121, 249, 0.2) 100%);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
}

.tool-card-btn:hover {
    background: linear-gradient(135deg, #667eea 0%, #e879f9 100%);
    border-color: transparent;
    color: white;
}