/* ====================================
   极简像素风格导航页 - 主样式
   8-bit复古视觉 / 硬边描边 / 有限调色板
==================================== */

/* 本地像素字体 */
@font-face {
    font-family: 'Press Start 2P';
    src: url('../fonts/PressStart2P.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'VT323';
    src: url('../fonts/VT323.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* CSS变量 - 浅色模式 */
:root {
    --bg: #D4D4D4;
    --card-bg: #F4F4F4;
    --primary: #4C5FD5;
    --primary-dark: #3A4BB0;
    --accent: #E94560;
    --success: #4CAF50;
    --warning: #FF9800;
    --danger: #E94560;
    --text-primary: #1A1A1A;
    --text-secondary: #555555;
    --text-tertiary: #888888;
    --border: #1A1A1A;
    --shadow-color: rgba(26, 26, 26, 0.3);
    --border-width: 2px;
    --shadow-offset: 4px;
    --grid-color: rgba(0, 0, 0, 0.03);

    --font-pixel: 'Press Start 2P', 'Microsoft YaHei', monospace;
    --font-mono: 'VT323', 'Microsoft YaHei', monospace;
    --font-zh: 'Microsoft YaHei', 'PingFang SC', sans-serif;
}

/* 深色模式 */
[data-theme="dark"] {
    --bg: #0F0F1A;
    --card-bg: #1A1A2E;
    --primary: #7D7DF5;
    --primary-dark: #5D5DD5;
    --accent: #E94560;
    --success: #66BB6A;
    --warning: #FFA726;
    --danger: #EF5350;
    --text-primary: #EEEEEE;
    --text-secondary: #AAAAAA;
    --text-tertiary: #777777;
    --border: #7D7DF5;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --grid-color: rgba(255, 255, 255, 0.03);
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-zh);
    color: var(--text-primary);
    background: var(--bg);
    background-image:
        linear-gradient(0deg, transparent 24%, var(--grid-color) 25%, var(--grid-color) 26%, transparent 27%, transparent 74%, var(--grid-color) 75%, var(--grid-color) 76%, transparent 77%, transparent),
        linear-gradient(90deg, transparent 24%, var(--grid-color) 25%, var(--grid-color) 26%, transparent 27%, transparent 74%, var(--grid-color) 75%, var(--grid-color) 76%, transparent 77%, transparent);
    background-size: 50px 50px;
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: none;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器 */
.container {
    max-width: 860px;
    margin: 0 auto;
    padding: clamp(16px, 3vw, 32px);
    animation: fadeIn 0.4s steps(4) forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ====================================
   页面头部
==================================== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: clamp(20px, 4vh, 32px);
    padding: 16px 20px;
    background: var(--card-bg);
    border: var(--border-width) solid var(--border);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
}

.header-left {
    flex: 1;
}

.main-title {
    font-family: var(--font-pixel);
    font-size: clamp(14px, 2.5vw, 20px);
    color: var(--text-primary);
    letter-spacing: 1px;
    line-height: 1.4;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* 时间显示 */
.time-display {
    text-align: right;
    padding: 8px 12px;
    background: var(--bg);
    border: var(--border-width) solid var(--border);
    min-width: 120px;
}

.current-time {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    color: var(--primary);
    font-weight: bold;
    line-height: 1.2;
}

.current-date {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ====================================
   搜索栏
==================================== */
.search-section {
    margin-bottom: clamp(20px, 4vh, 32px);
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: 600px;
    margin: 0 auto 12px;
    padding: 8px 12px;
    background: var(--card-bg);
    border: var(--border-width) solid var(--border);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    transition: box-shadow 0.1s steps(2), transform 0.1s steps(2);
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--primary);
}

.search-icon {
    color: var(--text-secondary);
    flex-shrink: 0;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-zh);
    padding: 6px 4px;
}

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

.search-btn {
    background: var(--primary);
    color: #FFFFFF;
    border: var(--border-width) solid var(--border);
    padding: 6px 16px;
    font-family: var(--font-pixel);
    font-size: 10px;
    cursor: pointer;
    transition: transform 0.05s steps(2);
}

.search-btn:hover {
    background: var(--primary-dark);
}

.search-btn:active {
    transform: translate(2px, 2px);
}

/* 搜索引擎选择 */
.search-engines {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.engine-btn {
    background: var(--card-bg);
    border: var(--border-width) solid var(--border);
    color: var(--text-primary);
    padding: 4px 12px;
    font-size: 12px;
    font-family: var(--font-zh);
    cursor: pointer;
    transition: background 0.05s steps(2);
}

.engine-btn:hover {
    background: var(--bg);
}

.engine-btn.active {
    background: var(--primary);
    color: #FFFFFF;
}

/* ====================================
   导航网格
==================================== */
.navigation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: clamp(12px, 2vw, 20px);
    margin-bottom: clamp(20px, 4vh, 32px);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 导航卡片 */
.nav-card {
    background: var(--card-bg);
    border: var(--border-width) solid var(--border);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    padding: clamp(14px, 2vw, 20px);
    cursor: pointer;
    transition: transform 0.08s steps(2), box-shadow 0.08s steps(2);
    display: flex;
    flex-direction: column;
    min-height: 180px;
    animation: cardAppear 0.3s steps(3) forwards;
    opacity: 0;
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-card:hover {
    transform: translate(-2px, -2px);
    box-shadow: calc(var(--shadow-offset) + 2px) calc(var(--shadow-offset) + 2px) 0 var(--shadow-color);
}

.nav-card:active {
    transform: translate(2px, 2px);
    box-shadow: calc(var(--shadow-offset) - 2px) calc(var(--shadow-offset) - 2px) 0 var(--shadow-color);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: var(--border-width) solid var(--border);
}

.card-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--primary);
}

.card-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

.card-title {
    font-family: var(--font-pixel);
    font-size: 11px;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.card-description {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    flex-grow: 1;
}

.card-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    margin-top: auto;
}

.card-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px 8px;
    background: var(--bg);
    border: var(--border-width) solid var(--border);
    text-decoration: none;
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    font-family: var(--font-zh);
    transition: background 0.05s steps(2), transform 0.05s steps(2);
    min-height: 32px;
}

.card-link:hover {
    background: var(--primary);
    color: #FFFFFF;
}

.card-link:active {
    transform: translate(1px, 1px);
}

.link-icon {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
}

/* ====================================
   快捷工具栏
==================================== */
.quick-tools {
    display: flex;
    justify-content: center;
    gap: clamp(8px, 1.5vw, 14px);
    flex-wrap: wrap;
    margin-bottom: clamp(20px, 4vh, 32px);
}

.tool-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: var(--card-bg);
    border: var(--border-width) solid var(--border);
    box-shadow: 3px 3px 0 var(--shadow-color);
    cursor: pointer;
    color: var(--text-primary);
    min-width: 64px;
    transition: transform 0.08s steps(2), box-shadow 0.08s steps(2);
}

.tool-btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--shadow-color);
    color: var(--primary);
}

.tool-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 var(--shadow-color);
}

.tool-btn svg {
    color: var(--text-primary);
    transition: color 0.05s steps(2);
}

.tool-btn:hover svg {
    color: var(--primary);
}

.tool-label {
    font-family: var(--font-pixel);
    font-size: 8px;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

/* ====================================
   底部
==================================== */
.footer {
    text-align: center;
    padding: 16px 0;
    margin-top: clamp(20px, 4vh, 32px);
}

.footer-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.visit-count {
    font-family: var(--font-mono);
    font-size: 1rem;
}

.footer-icp {
    margin-top: 4px;
}

.footer-icp a {
    font-size: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 2px 6px;
    border: 1px solid transparent;
    transition: border-color 0.05s steps(2), color 0.05s steps(2);
}

.footer-icp a:hover {
    color: var(--primary);
    border-color: var(--border);
}

/* ====================================
   模态窗口
==================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s steps(3);
}

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

.modal {
    background: var(--card-bg);
    border: var(--border-width) solid var(--border);
    box-shadow: 6px 6px 0 var(--shadow-color);
    max-width: 90vw;
    max-height: 90vh;
    width: 460px;
    transform: scale(0.9);
    transition: transform 0.1s steps(3);
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: var(--border-width) solid var(--border);
    background: var(--primary);
}

.modal-title {
    font-family: var(--font-pixel);
    font-size: 12px;
    color: #FFFFFF;
    letter-spacing: 0.5px;
}

.modal-close {
    background: none;
    border: var(--border-width) solid #FFFFFF;
    color: #FFFFFF;
    font-size: 12px;
    font-family: var(--font-pixel);
    cursor: pointer;
    padding: 2px 8px;
    transition: background 0.05s steps(2);
}

.modal-close:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.modal-content {
    padding: 16px;
    max-height: 60vh;
    overflow-y: auto;
}

.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: var(--bg);
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--border);
}

/* ====================================
   赞助相关
==================================== */
.sponsor-container {
    text-align: center;
    padding: 8px 0;
}

.sponsor-description {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.sponsor-description p {
    margin-bottom: 8px;
}

/* 金额输入区域 */
.amount-section {
    margin-bottom: 16px;
    padding: 12px;
    background: var(--bg);
    border: var(--border-width) solid var(--border);
}

.amount-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.amount-input-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.amount-input {
    width: 100%;
    padding: 8px 12px;
    border: var(--border-width) solid var(--border);
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 16px;
    font-family: var(--font-mono);
    text-align: center;
    outline: none;
}

.amount-input:focus {
    border-color: var(--primary);
}

.amount-preset {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: center;
}

.amount-btn {
    padding: 4px 10px;
    border: var(--border-width) solid var(--border);
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 12px;
    font-family: var(--font-zh);
    cursor: pointer;
    transition: background 0.05s steps(2), transform 0.05s steps(2);
}

.amount-btn:hover {
    background: var(--primary);
    color: #FFFFFF;
}

.amount-btn:active {
    transform: translate(1px, 1px);
}

.current-amount {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 8px;
    padding: 4px 10px;
    background: rgba(76, 95, 213, 0.1);
    border: var(--border-width) solid var(--primary);
    display: inline-block;
}

.payment-notice {
    font-size: 12px;
    color: var(--warning);
    margin-top: 8px;
    padding: 6px 10px;
    background: rgba(255, 152, 0, 0.1);
    border-left: 3px solid var(--warning);
    text-align: left;
}

/* 二维码区域 */
.sponsor-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 12px;
}

.sponsor-tab {
    padding: 6px 14px;
    background: var(--card-bg);
    border: var(--border-width) solid var(--border);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 13px;
    font-family: var(--font-zh);
    font-weight: 500;
    transition: background 0.05s steps(2);
    display: flex;
    align-items: center;
    gap: 6px;
}

.sponsor-tab:hover {
    background: var(--bg);
}

.sponsor-tab.active {
    background: var(--primary);
    color: #FFFFFF;
    border-color: var(--primary);
}

.sponsor-content {
    background: var(--bg);
    border: var(--border-width) solid var(--border);
    padding: 16px;
    margin-bottom: 12px;
}

.qr-code-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.qr-code-label {
    font-family: var(--font-pixel);
    font-size: 10px;
    color: var(--text-primary);
}

.qr-code-loading {
    width: 180px;
    height: 180px;
    border: var(--border-width) dashed var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 12px;
    text-align: center;
    background: var(--card-bg);
}

.loading-spinner {
    font-size: 1.5rem;
    animation: rotate 1s steps(8) infinite;
    margin-bottom: 4px;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.qr-code-hint {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 4px;
    line-height: 1.4;
}

.qr-code-placeholder {
    width: 180px;
    height: 180px;
    border: var(--border-width) dashed var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 13px;
    text-align: center;
    background: var(--card-bg);
}

.qr-code-image {
    width: 180px;
    height: 180px;
    background: #FFFFFF;
    padding: 8px;
    border: var(--border-width) solid var(--border);
    image-rendering: pixelated;
}

.qr-code-info {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

/* ====================================
   计算器模态内容
==================================== */
.calc-display {
    width: 100%;
    padding: 10px;
    font-size: 1.5rem;
    font-family: var(--font-mono);
    text-align: right;
    border: var(--border-width) solid var(--border);
    background: var(--bg);
    color: var(--text-primary);
    margin-bottom: 12px;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

.calc-btn {
    padding: 10px;
    border: var(--border-width) solid var(--border);
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 16px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: background 0.05s steps(2), transform 0.05s steps(2);
}

.calc-btn:hover {
    background: var(--bg);
}

.calc-btn:active {
    transform: translate(1px, 1px);
}

.calc-btn-op {
    background: var(--primary);
    color: #FFFFFF;
}

.calc-btn-op:hover {
    background: var(--primary-dark);
}

.calc-btn-clear {
    background: var(--danger);
    color: #FFFFFF;
}

.calc-btn-clear:hover {
    background: #C73E5A;
}

.calc-btn-eq {
    background: var(--success);
    color: #FFFFFF;
}

.calc-btn-eq:hover {
    background: #3D9140;
}

/* ====================================
   便签模态内容
==================================== */
.note-textarea {
    width: 100%;
    height: 200px;
    padding: 10px;
    border: var(--border-width) solid var(--border);
    background: var(--bg);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-zh);
    resize: vertical;
    outline: none;
}

.note-textarea:focus {
    border-color: var(--primary);
}

.note-save-btn {
    margin-top: 10px;
    padding: 8px 20px;
    background: var(--primary);
    color: #FFFFFF;
    border: var(--border-width) solid var(--border);
    font-size: 13px;
    font-family: var(--font-zh);
    cursor: pointer;
    transition: transform 0.05s steps(2);
}

.note-save-btn:hover {
    background: var(--primary-dark);
}

.note-save-btn:active {
    transform: translate(1px, 1px);
}

/* ====================================
   天气模态内容
==================================== */
.weather-container {
    text-align: center;
    padding: 16px 0;
}

.weather-icon {
    margin-bottom: 12px;
    color: var(--primary);
}

.weather-title {
    font-family: var(--font-pixel);
    font-size: 12px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.weather-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.weather-list {
    text-align: left;
    margin-top: 12px;
    padding: 12px;
    background: var(--bg);
    border: var(--border-width) solid var(--border);
}

.weather-list li {
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    list-style: none;
    padding-left: 12px;
    position: relative;
}

.weather-list li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-family: var(--font-mono);
    font-weight: bold;
}

/* ====================================
   键盘帮助模态内容
==================================== */
.help-container h4 {
    font-family: var(--font-pixel);
    font-size: 11px;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.help-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding: 6px 10px;
    background: var(--bg);
    border: var(--border-width) solid var(--border);
}

.help-key {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--primary);
    font-weight: bold;
}

.help-desc {
    font-size: 13px;
    color: var(--text-secondary);
}

.help-note {
    color: var(--text-tertiary);
    font-size: 12px;
    margin-top: 12px;
}

/* ====================================
   响应式设计
==================================== */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

    .header {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .time-display {
        text-align: center;
        min-width: 0;
        width: 100%;
    }

    .navigation-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .card-links {
        grid-template-columns: 1fr;
    }

    .search-engines {
        flex-wrap: wrap;
    }

    .quick-tools {
        gap: 8px;
    }

    .tool-btn {
        min-width: 56px;
        padding: 8px 10px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 14px;
    }

    .search-box {
        flex-wrap: wrap;
    }

    .search-btn {
        width: 100%;
        margin-top: 4px;
    }
}

/* ====================================
   可访问性
==================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 打印样式 */
@media print {
    body {
        background: white;
        color: black;
    }

    .modal-overlay,
    .quick-tools {
        display: none;
    }
}