/* ===== 设计系统 ===== */
:root {
    --color-bg: #0A0A0A;
    --color-surface: #111111;
    --color-surface-hover: #1A1A1A;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.12);
    --color-text-primary: #FFFFFF;
    --color-text-secondary: rgba(255, 255, 255, 0.65);
    --color-text-tertiary: rgba(255, 255, 255, 0.4);
    --color-accent: #3B82F6;
    --color-accent-hover: #2563EB;
    --color-glow: rgba(59, 130, 246, 0.15);
    
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
    background: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.5;
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 0.3s ease;
}

body.loaded {
    opacity: 1;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

img {
    user-select: none;
    -webkit-user-select: none;
}

.page-wrapper {
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ===== 顶部导航 ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.brand-logo {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    object-fit: cover;
}

.brand-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.header-search {
    flex: 1;
    max-width: 480px;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: var(--space-4);
    color: var(--color-text-tertiary);
    font-size: 20px;
    pointer-events: none;
}

.search-input {
    width: 100%;
    height: 40px;
    padding: 0 var(--space-12) 0 var(--space-12);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-border-hover);
    background: var(--color-surface-hover);
}

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

.search-kbd {
    position: absolute;
    right: var(--space-3);
    padding: 2px var(--space-2);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    color: var(--color-text-tertiary);
    pointer-events: none;
}

/* ===== 运营横幅 ===== */
.hero {
    padding: var(--space-8) 0;
}

.hero-card {
    position: relative;
    padding: var(--space-8);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.hero-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.3;
    margin-bottom: var(--space-5);
    letter-spacing: -0.02em;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.hero-cta:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-border-hover);
    transform: translateY(-1px);
}

.hero-cta .iconify {
    font-size: 16px;
}

/* ===== 内容区 ===== */
.content {
    padding: var(--space-6) 0 var(--space-12);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-4);
}

.app-card {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.app-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition);
}

.app-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.app-card:hover::before {
    opacity: 1;
}

.app-card-inner {
    padding: var(--space-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.app-header {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-4);
    min-width: 0;
}

.app-icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    overflow: hidden;
    flex-shrink: 0;
}

.app-icon {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.app-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: -0.01em;
}

.app-desc {
    font-size: 13px;
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.app-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-size: 13px;
    font-weight: 500;
    flex-shrink: 0;
    transition: var(--transition);
}

.app-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-border-hover);
}

.app-btn-icon {
    font-size: 16px;
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
}

.empty-icon {
    display: inline-block;
    font-size: 64px;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-5);
}

.empty-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.empty-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* ===== 悬浮按钮 ===== */
.fab-group {
    position: fixed;
    right: var(--space-6);
    bottom: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: 90;
}

.fab {
    width: 48px;
    height: 48px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

.fab:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
    transform: translateY(-2px);
}

.fab .iconify {
    font-size: 22px;
}

/* ===== 弹窗 ===== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-container {
    position: relative;
    width: 90%;
    max-width: 400px;
    transform: scale(0.95);
    transition: transform var(--transition);
}

.modal.active .modal-container {
    transform: scale(1);
}

.modal-card {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 32px;
    height: 32px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 50%;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.6);
    color: var(--color-text-primary);
}

.modal-close .iconify {
    font-size: 20px;
}

.modal-preview {
    width: 100%;
    height: 220px;
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.modal-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity var(--transition);
}

.modal-body {
    padding: var(--space-6);
    text-align: center;
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    letter-spacing: -0.01em;
}

.modal-subtitle {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.modal-actions {
    display: flex;
    gap: var(--space-3);
}

.modal-action-btn {
    flex: 1;
    height: 48px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 15px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    transition: var(--transition);
}

.modal-action-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-border-hover);
}

.modal-action-btn .iconify {
    font-size: 20px;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .header-inner {
        height: 56px;
        flex-direction: column;
        padding: var(--space-3) 0;
        gap: var(--space-3);
    }
    
    .header-brand {
        width: 100%;
    }
    
    .header-search {
        width: 100%;
        max-width: none;
    }
    
    .search-input {
        height: 38px;
        font-size: 13px;
    }
    
    .search-kbd {
        display: none;
    }
    
    .hero {
        padding: var(--space-6) 0;
    }
    
    .hero-card {
        padding: var(--space-6);
    }
    
    .hero-title {
        font-size: 20px;
    }
    
    .content {
        padding: var(--space-4) 0 var(--space-10);
    }
    
    .apps-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .app-card-inner {
        padding: var(--space-4);
    }
    
    .app-icon-wrapper {
        width: 48px;
        height: 48px;
    }
    
    .app-name {
        font-size: 15px;
    }
    
    .app-desc {
        font-size: 12px;
    }
    
    .app-btn {
        padding: var(--space-2) var(--space-3);
    }
    
    .app-btn-text {
        display: none;
    }
    
    .fab-group {
        right: var(--space-4);
        bottom: var(--space-4);
    }
    
    .fab {
        width: 44px;
        height: 44px;
    }
    
    .fab .iconify {
        font-size: 20px;
    }
    
    .modal-container {
        max-width: 360px;
    }
    
    .modal-preview {
        height: 200px;
    }
    
    .modal-body {
        padding: var(--space-5);
    }
    
    .modal-title {
        font-size: 18px;
    }
    
    .modal-action-btn {
        height: 44px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .brand-name {
        font-size: 15px;
    }
    
    .hero-card {
        padding: var(--space-5);
    }
    
    .hero-title {
        font-size: 18px;
    }
    
    .apps-grid {
        gap: var(--space-2);
    }
}