/* 攻击演示系统 - Bugatti 极简奢华风格 */

/* ===== 字体导入 ===== */
@import url('https://fonts.googleapis.com/css2?family=Saira+Condensed:wght@300;400;500&family=EB+Garamond:wght@400;500&family=JetBrains+Mono:wght@300;400;500&display=swap');

/* ===== 设计令牌 ===== */
:root {
    /* 颜色 */
    --color-primary: #ffffff;
    --color-ink: #ffffff;
    --color-body: #cccccc;
    --color-body-strong: #e6e6e6;
    --color-muted: #999999;
    --color-muted-soft: #666666;
    --color-hairline: #262626;
    --color-hairline-strong: #3a3a3a;
    --color-canvas: #000000;
    --color-surface-soft: #0d0d0d;
    --color-surface-card: #141414;
    --color-surface-elevated: #1f1f1f;
    --color-on-primary: #000000;
    --color-on-dark: #ffffff;
    --color-link: #c3d9f3;
    --color-warning: #d4a017;
    --color-success: #5fa657;

    /* 字体 */
    --font-display: 'Saira Condensed', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'EB Garamond', Garamond, "Times New Roman", serif;
    --font-mono: 'JetBrains Mono', ui-monospace, "SF Mono", "Cascadia Mono", monospace;

    /* 间距 */
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 40px;
    --spacing-xxl: 64px;
    --spacing-section: 120px;

    /* 圆角 */
    --rounded-none: 0px;
    --rounded-pill: 9999px;
    --rounded-full: 9999px;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-canvas);
    min-height: 100vh;
    color: var(--color-body);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 16px;
    letter-spacing: 0;
}

/* ===== 导航栏 ===== */
.navbar {
    background-color: transparent;
    padding: 0 var(--spacing-xl);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 56px;
    display: flex;
    align-items: center;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-logo {
    color: var(--color-on-dark);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 6px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo:hover {
    color: var(--color-on-dark);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-menu a {
    color: var(--color-on-dark);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: opacity 0.3s;
}

.nav-menu a:hover {
    opacity: 0.7;
    color: var(--color-on-dark);
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-surface-card);
    padding: var(--spacing-sm) 0;
    min-width: 200px;
    z-index: 100;
    margin-top: var(--spacing-sm);
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    color: var(--color-body);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 12px;
    display: block;
    transition: color 0.2s;
}

.dropdown-menu a:hover {
    color: var(--color-on-dark);
}

/* ===== 主内容区 ===== */
.container {
    max-width: 1280px;
    margin: 56px auto var(--spacing-xxl);
    padding: 0 var(--spacing-xl);
}

/* ===== 卡片 ===== */
.card {
    background-color: var(--color-surface-card);
    border-radius: var(--rounded-none);
    padding: var(--spacing-xxl);
    margin-bottom: var(--spacing-section);
    border: 1px solid var(--color-hairline);
}

.card h1 {
    color: var(--color-on-dark);
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 400;
    letter-spacing: 3px;
    line-height: 1.15;
    text-transform: uppercase;
}

.card h2 {
    color: var(--color-on-dark);
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 400;
    letter-spacing: 2px;
    line-height: 1.2;
    text-transform: uppercase;
}

.card h3 {
    color: var(--color-on-dark);
    margin: var(--spacing-xl) 0 var(--spacing-md);
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.card p {
    color: var(--color-body);
    line-height: 1.7;
    font-size: 16px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 14px 32px;
    border: 1px solid var(--color-on-dark);
    border-radius: var(--rounded-pill);
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    text-decoration: none;
    transition: all 0.3s;
    line-height: 1;
    height: 44px;
    background-color: transparent;
    color: var(--color-on-dark);
}

.btn:hover {
    background-color: var(--color-on-dark);
    color: var(--color-on-primary);
    text-decoration: none;
}

.btn-primary {
    /* Bugatti 风格：透明 + 白色描边 */
}

.btn-danger {
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.btn-danger:hover {
    background-color: var(--color-warning);
    color: var(--color-on-primary);
}

.btn-warning {
    border-color: var(--color-muted);
    color: var(--color-muted);
}

.btn-warning:hover {
    background-color: var(--color-muted);
    color: var(--color-on-primary);
}

.btn-info {
    border-color: var(--color-link);
    color: var(--color-link);
}

.btn-info:hover {
    background-color: var(--color-link);
    color: var(--color-on-primary);
}

.btn-sm {
    padding: 10px 24px;
    font-size: 12px;
    height: 36px;
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 0;
    border: none;
    border-bottom: 1px solid var(--color-hairline-strong);
    border-radius: var(--rounded-none);
    background-color: transparent;
    color: var(--color-on-dark);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
    transition: border-color 0.3s;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-bottom-color: var(--color-on-dark);
}

.form-group input::placeholder {
    color: var(--color-muted-soft);
}

/* ===== 结果展示 ===== */
.result-box {
    background-color: var(--color-surface-soft);
    border-radius: var(--rounded-none);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 14px;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 400px;
    overflow-y: auto;
    line-height: 1.7;
    border: 1px solid var(--color-hairline);
}

.result-success {
    border-left: 3px solid var(--color-success);
}

.result-error {
    border-left: 3px solid var(--color-warning);
}

.result-warning {
    border-left: 3px solid var(--color-success);
}

/* ===== 代码展示 ===== */
.code-block {
    background-color: var(--color-surface-soft);
    border-radius: var(--rounded-none);
    padding: var(--spacing-lg);
    margin: var(--spacing-md) 0;
    overflow-x: auto;
    border: 1px solid var(--color-hairline);
}

.code-block pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.7;
}

/* ===== 表格 ===== */
table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    font-size: 16px;
}

th, td {
    padding: var(--spacing-md) 0;
    text-align: left;
    border-bottom: 1px solid var(--color-hairline);
}

th {
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
}

td {
    color: var(--color-body);
}

/* ===== 警告框 ===== */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--rounded-none);
    margin-bottom: var(--spacing-md);
    font-size: 14px;
    border: 1px solid;
}

.alert-info {
    background-color: transparent;
    border-color: var(--color-hairline);
    color: var(--color-body);
}

.alert-danger {
    background-color: transparent;
    border-color: var(--color-hairline);
    color: var(--color-warning);
}

.alert-success {
    background-color: transparent;
    border-color: var(--color-hairline);
    color: var(--color-success);
}

.alert-warning {
    background-color: transparent;
    border-color: var(--color-hairline);
    color: var(--color-muted);
}

/* ===== 首页卡片网格 ===== */
.attack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.attack-card {
    background-color: var(--color-surface-card);
    border-radius: var(--rounded-none);
    padding: var(--spacing-xxl);
    transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
    border: 1px solid var(--color-hairline);
}

.attack-card:hover {
    border-color: var(--color-hairline-strong);
}

.attack-card h3 {
    color: var(--color-on-dark);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.attack-card p {
    color: var(--color-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    font-size: 14px;
}

.attack-card .difficulty {
    display: inline-block;
    padding: var(--spacing-xxs) var(--spacing-sm);
    border-radius: var(--rounded-pill);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    border: 1px solid;
}

.difficulty-easy {
    border-color: var(--color-success);
    color: var(--color-success);
}

.difficulty-medium {
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.difficulty-hard {
    border-color: var(--color-muted);
    color: var(--color-muted);
}

/* ===== 标签页 ===== */
.tabs {
    display: flex;
    gap: 0;
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-hairline);
    padding-bottom: 0;
}

.tab {
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    border-bottom: 1px solid transparent;
    transition: all 0.3s;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-muted);
    margin-bottom: -1px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.tab.active {
    color: var(--color-on-dark);
    border-bottom-color: var(--color-on-dark);
}

.tab:hover {
    color: var(--color-on-dark);
}

/* ===== 页脚 ===== */
.footer {
    text-align: center;
    padding: var(--spacing-xxl);
    margin-top: var(--spacing-section);
    color: var(--color-muted-soft);
    border-top: 1px solid var(--color-hairline);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-xs);
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }

    .nav-menu a {
        padding: var(--spacing-md) 0;
        display: block;
    }

    .dropdown-menu {
        position: static;
        border: none;
        background-color: var(--color-surface-card);
        margin-top: 0;
    }

    .attack-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .card {
        padding: var(--spacing-xl);
    }

    .card h1 {
        font-size: 32px;
        letter-spacing: 2px;
    }

    .card h2 {
        font-size: 24px;
        letter-spacing: 1.5px;
    }
}

/* ===== 链接 ===== */
a {
    color: var(--color-link);
    text-decoration: underline;
    transition: opacity 0.3s;
}

a:hover {
    opacity: 0.7;
    text-decoration: underline;
    color: var(--color-link);
}

/* ===== 代码 ===== */
code {
    background-color: var(--color-surface-soft);
    padding: var(--spacing-xxs) var(--spacing-xs);
    border-radius: var(--rounded-none);
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--color-body);
}

/* ===== 按钮禁用状态 ===== */
button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ===== 表单布局 ===== */
.form-inline {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
}

.form-inline .form-group {
    flex: 1;
    margin-bottom: 0;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--color-hairline);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-hairline-strong);
}

/* ===== 选中文本 ===== */
::selection {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--color-on-dark);
}

/* ===== 图标 ===== */
.icon-sketch {
    vertical-align: middle;
    margin-right: var(--spacing-xxs);
}

svg.icon-sketch {
    display: inline-block;
    vertical-align: middle;
}

/* ===== 特效文字 ===== */
.highlight {
    color: var(--color-link);
}

.danger {
    color: var(--color-warning);
}

.warning {
    color: var(--color-muted);
}

/* ===== 链接按钮 ===== */
.text-link {
    color: var(--color-link);
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    text-decoration: none;
    border-bottom: 1px solid var(--color-link);
    padding-bottom: 2px;
    transition: opacity 0.3s;
}

.text-link:hover {
    opacity: 0.7;
    text-decoration: none;
    color: var(--color-link);
}