/* ========================================
   我的作品 - 样式
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - Matching main site theme */
    --primary: #2196F3;
    --primary-variant: #1976D2;
    --secondary: #757575;
    --background: #FAFAFA;
    --surface: #FFFFFF;
    --error: #B00020;
    --on-primary: #FFFFFF;
    --on-secondary: #FFFFFF;
    --on-background: #333333;
    --on-surface: #333333;
    --text-secondary: #666666;
    --text-hint: #999999;
    --border-color: #E0E0E0;

    /* Category Colors - Muted versions */
    --finance-bg: rgba(76, 175, 80, 0.08);
    --finance-text: #388E3C;
    --efficiency-bg: rgba(33, 150, 243, 0.08);
    --efficiency-text: #1976D2;
    --image-bg: rgba(255, 152, 0, 0.08);
    --image-text: #F57C00;

    --android-bg: rgba(76, 175, 80, 0.08);
    --android-text: #2E7D32;

    --dev-bg: rgba(156, 39, 176, 0.08);
    --dev-text: #7B1FA2;

    --desktop-bg: rgba(96, 125, 139, 0.08);
    --desktop-text: #546E7A;

    /* Spacing (8dp grid) */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;

    /* Elevation Shadows */
    --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.14);
    --shadow-card-hover: 0 4px 8px rgba(0, 0, 0, 0.20);
    --shadow-sidebar: 0 2px 8px rgba(0, 0, 0, 0.12);
    --shadow-header: 0 2px 4px rgba(0, 0, 0, 0.14);

    /* Layout */
    --header-height: 64px;
    --sidebar-width: 280px;
    --tab-bar-height: 56px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--background);
    color: var(--on-background);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: #FFFFFF;
    color: #333333;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--space-md);
    max-width: 1600px;
    margin: 0 auto;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-toggle {
    display: none;
    width: auto;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px 12px;
    position: relative;
    align-items: center;
    gap: 6px;
    border-radius: 4px;
    color: #333333;
    transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
    background-color: rgba(0, 0, 0, 0.04);
}

.menu-toggle svg {
    flex-shrink: 0;
}

.menu-toggle-label {
    display: none;
    font-size: 0.8125rem;
    font-weight: 500;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 500;
}

.logo-icon {
    flex-shrink: 0;
    display: block;
}

.logo-text {
    letter-spacing: 0.5px;
}

.header-right {
    display: flex;
    align-items: center;
}

.search-box {
    display: flex;
    align-items: center;
    background: #F5F5F5;
    border-radius: 4px;
    padding: 0 var(--space-sm);
    transition: var(--transition-fast);
}

.search-box:focus-within {
    background: #EEEEEE;
}

.search-box input {
    width: 200px;
    padding: var(--space-sm) var(--space-sm);
    background: transparent;
    border: none;
    color: #333333;
    font-size: 0.875rem;
    outline: none;
}

.search-box input::placeholder {
    color: rgba(0, 0, 0, 0.4);
}

.search-btn {
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    color: #666666;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================
   App Container & Sidebar
   ======================================== */
.app-container {
    display: flex;
    padding-top: var(--header-height);
    min-height: calc(100vh - var(--header-height) - 60px);
}

.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--surface);
    box-shadow: var(--shadow-sidebar);
    overflow-y: auto;
    z-index: 900;
    transition: transform var(--transition-normal);
}

.sidebar-nav {
    padding: var(--space-lg) 0;
}

.nav-section {
    margin-bottom: var(--space-lg);
}

.nav-section-title {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.nav-list {
    margin: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    color: var(--text-secondary);
    transition: var(--transition-fast);
    cursor: pointer;
    position: relative;
}

.nav-item:hover {
    background-color: rgba(0, 0, 0, 0.04);
}

.nav-item.active {
    background-color: rgba(33, 150, 243, 0.06);
    color: var(--primary);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: var(--primary);
}

.nav-icon {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.nav-text {
    flex: 1;
    font-size: 0.875rem;
    font-weight: 500;
}

.nav-count {
    font-size: 0.75rem;
    color: var(--text-hint);
    background: rgba(0, 0, 0, 0.06);
    padding: 2px 8px;
    border-radius: 12px;
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    font-size: 0.75rem;
    color: var(--text-hint);
    text-align: center;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 850;
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-xl);
    background-color: #F5F5F5;
    min-height: calc(100vh - var(--header-height) - 60px);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-md);
    max-width: 1200px;
}

/* ========================================
   Tool Card
   ======================================== */
.tool-card {
    position: relative;
    background-color: var(--surface);
    border-radius: 8px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.tool-card[data-hidden="true"] {
    display: none;
}

.card-icon {
    font-size: 1.75rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: rgba(33, 150, 243, 0.1);
    border-radius: 10px;
}

.card-top-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

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

.card-body {
    padding: var(--space-md) var(--space-md) var(--space-sm);
    flex: 1;
}

.category-tag {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    z-index: 1;
    padding: 2px var(--space-sm);
    border-radius: 12px;
    font-size: 0.6875rem;
    font-weight: 500;
    line-height: 1.4;
}

.category-tag.finance {
    background-color: var(--finance-bg);
    color: var(--finance-text);
}

.category-tag.efficiency {
    background-color: var(--efficiency-bg);
    color: var(--efficiency-text);
}

.category-tag.image {
    background-color: var(--image-bg);
    color: var(--image-text);
}

.category-tag.android {
    background-color: var(--android-bg);
    color: var(--android-text);
}

.category-tag.dev {
    background-color: var(--dev-bg);
    color: var(--dev-text);
}

.category-tag.desktop {
    background-color: var(--desktop-bg);
    color: var(--desktop-text);
}

.card-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--on-surface);
    line-height: 1.3;
}

.card-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    padding: var(--space-sm) var(--space-md) var(--space-md);
    display: flex;
    flex-direction: row;
    gap: 6px;
}

.card-footer .btn {
    flex: 1;
    font-size: 0.8125rem;
    padding: var(--space-xs) var(--space-sm);
}

/* ========================================
   Buttons with Ripple Effect
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    border: none;
    overflow: hidden;
    position: relative;
    transition: background-color var(--transition-fast);
}

.btn-primary {
    width: 100%;
    background-color: var(--primary);
    color: var(--on-primary);
}

.btn-primary:hover {
    background-color: var(--primary-variant);
}

.btn svg {
    flex-shrink: 0;
}

/* Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    background: radial-gradient(circle, rgba(255, 255, 255, 0.5) 0%, transparent 60%);
    opacity: 0;
    pointer-events: none;
}

.ripple:active::after {
    transform: translate(-50%, -50%) scale(2.5);
    opacity: 1;
    transition: transform 0.5s ease-out, opacity 0.3s ease-out;
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
    text-align: center;
    padding: var(--space-xxl);
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--on-background);
}

.empty-state p {
    font-size: 0.875rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: #F5F5F5;
    color: #333333;
    padding: var(--space-md);
    text-align: center;
}

.footer-content p {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ========================================
   Mobile Tab Bar
   ======================================== */
.tab-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--tab-bar-height);
    background-color: var(--surface);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.12);
    z-index: 1000;
}

.tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.tab-item.active {
    color: var(--primary);
}

.tab-item.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 3px;
    background-color: var(--primary);
    border-radius: 0 0 3px 3px;
}

.tab-icon {
    font-size: 1.25rem;
}

.tab-text {
    font-size: 0.625rem;
    font-weight: 500;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 959px) {
    .menu-toggle {
        display: inline-flex;
        flex-direction: row;
        justify-content: center;
        align-items: center;
    }

    .menu-toggle-label {
        display: inline;
    }

    .header-right {
        gap: 4px;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-overlay.open {
        display: block;
    }

    .main-content {
        margin-left: 0;
        padding: var(--space-lg);
    }

    .tab-bar {
        display: flex;
    }

    .app-container {
        padding-bottom: var(--tab-bar-height);
    }

    .search-box input {
        width: 150px;
    }
}

@media (max-width: 599px) {
    .logo-text {
        font-size: 1rem;
    }

    .search-box {
        display: none;
    }

    .main-content {
        padding: var(--space-sm);
    }

    .tools-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

}

@media (min-width: 600px) and (max-width: 959px) {
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-md);
    }
}

@media (min-width: 960px) {
    .tools-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}