/* ============================================================
   代码格式转换工具 - style.css
   迪妙网络空间安全学院 · 反钓工具箱
   导航/页脚样式与官网 style.css 保持一致，工具区为独立扩展
   ============================================================ */

:root {
    --primary: #1a6eff;
    --primary-light: #e8f1ff;
    --primary-dark: #0d4fc4;
    --primary-gradient: linear-gradient(135deg, #1a6eff 0%, #0d4fc4 100%);
    --text: #1a1a2e;
    --text-secondary: #5a5a7a;
    --text-light: #8a8aa0;
    --bg: #ffffff;
    --bg-warm: #f8fafc;
    --bg-card: #ffffff;
    --border: #e8ecf4;
    --shadow: 0 4px 24px rgba(26, 110, 255, 0.08);
    --shadow-hover: 0 12px 40px rgba(26, 110, 255, 0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --warning: #ff6b35;
    --warning-light: #fff3ed;
    --danger: #dc2626;
    --danger-light: #fef2f2;
    --success: #16a34a;
    --success-light: #f0fdf4;
    --mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Courier New', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ===== NAVIGATION（与官网一致） ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(26, 110, 255, 0.08);
    transition: var(--transition);
}
.navbar.scrolled { box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06); }
.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-icon { display: flex; align-items: center; justify-content: center; color: white; font-weight: 900; font-size: 18px; }
.logo-icon img { height: 44px; }
.logo-text { font-size: 16px; font-weight: 700; color: var(--text); line-height: 1.3; }
.logo-text span { display: block; font-size: 11px; font-weight: 400; color: var(--text-light); letter-spacing: 1px; }
.nav-links { display: flex; gap: 4px; list-style: none; }
.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); background: var(--primary-light); }
.mobile-toggle {
    display: none;
    width: 40px; height: 40px;
    border: none;
    background: var(--primary-light);
    border-radius: 10px;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}
.mobile-toggle span { display: block; width: 20px; height: 2px; background: var(--primary); border-radius: 2px; transition: var(--transition); }

/* ===== PAGE HEADER ===== */
.page-header {
    padding: 140px 0 48px;
    background: linear-gradient(180deg, #f0f5ff 0%, #ffffff 100%);
    text-align: center;
}
.page-header h1 {
    font-size: clamp(26px, 4vw, 38px);
    font-weight: 900;
    color: var(--text);
    margin-bottom: 12px;
}
.page-header p {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.8;
}
.breadcrumb {
    display: flex; align-items: center; justify-content: center;
    gap: 8px; margin-bottom: 20px;
    font-size: 13px; color: var(--text-light);
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--primary); text-decoration: none; font-weight: 500; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .current { color: var(--text-secondary); }
.header-tags {
    display: flex; justify-content: center; gap: 10px;
    flex-wrap: wrap; margin-top: 20px;
}
.htag {
    font-size: 12px; font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 5px 14px; border-radius: 100px;
}

/* ===== 通用容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.tool-main { padding: 40px 0 80px; }

/* ===== 本地运行提示条（与官网同款视觉） ===== */
.safe-banner {
    display: flex; align-items: flex-start; gap: 14px;
    background: linear-gradient(135deg, #e8f1ff 0%, #f0f5ff 100%);
    border: 1.5px solid rgba(26, 110, 255, 0.15);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 24px;
}
.safe-icon {
    width: 40px; height: 40px;
    background: var(--primary);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.safe-icon svg { width: 22px; height: 22px; color: white; }
.safe-banner h4 { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.safe-banner p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

/* ===== 能力总览条 ===== */
.capability-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.cap-item {
    background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}
.cap-num { font-size: 26px; font-weight: 900; color: #ff6b35; line-height: 1; }
.cap-label { font-size: 12px; color: rgba(255,255,255,0.6); margin-top: 6px; }

/* ===== 工具卡片 & 标签页 ===== */
.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 24px;
}
.tool-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    background: var(--bg-warm);
    overflow-x: auto;
    scrollbar-width: none;
}
.tool-tabs::-webkit-scrollbar { display: none; }
.tab-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 22px;
    border: none; background: transparent;
    font-family: inherit;
    font-size: 14px; font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2.5px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
}
.tab-btn svg { width: 17px; height: 17px; }
.tab-btn:hover { color: var(--primary); background: rgba(26,110,255,0.04); }
.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: white;
}
.tab-panel { display: none; padding: 22px 24px 24px; }
.tab-panel.active { display: block; }

/* ===== 控制条 ===== */
.ctrl-bar {
    display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap;
}
.ctrl-group { display: flex; flex-direction: column; gap: 6px; }
.ctrl-group.grow { flex: 1; min-width: 200px; }
.ctrl-group label { font-size: 12px; font-weight: 600; color: var(--text-secondary); }
.ctrl-group select, .ctrl-group input[type="text"] {
    font-family: inherit;
    font-size: 14px;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--text);
    outline: none;
    transition: var(--transition);
    min-width: 140px;
}
.ctrl-group input[type="text"] { font-family: var(--mono); width: 100%; min-width: 0; }
.ctrl-group select:focus, .ctrl-group input[type="text"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 110, 255, 0.12);
}
.ctrl-tip {
    margin-top: 14px;
    font-size: 12.5px;
    color: var(--text-light);
    line-height: 1.7;
    background: var(--bg-warm);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
}
.ctrl-tip.warn { background: var(--warning-light); color: #c2541a; }

.swap-btn {
    width: 42px; height: 42px;
    border: 1.5px solid var(--border);
    background: white;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-bottom: 1px;
}
.swap-btn svg { width: 18px; height: 18px; }
.swap-btn:hover { border-color: var(--primary); background: var(--primary-light); transform: rotate(180deg); }

.primary-btn, .ghost-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 22px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14px; font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}
.primary-btn {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 16px rgba(26, 110, 255, 0.3);
}
.primary-btn svg, .ghost-btn svg { width: 15px; height: 15px; }
.primary-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26, 110, 255, 0.4); }
.primary-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.ghost-btn {
    background: white;
    color: var(--text);
    border: 1.5px solid var(--border);
}
.ghost-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 进制面板 ===== */
.radix-grid { display: flex; flex-direction: column; gap: 16px; }
.radix-row { display: flex; gap: 14px; flex-wrap: wrap; }
.radix-out {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.radix-item { display: flex; flex-direction: column; gap: 6px; }
.radix-item.wide { grid-column: 1 / -1; }
.radix-label { font-size: 12px; font-weight: 600; color: var(--text-secondary); }
.radix-item input {
    font-family: var(--mono);
    font-size: 13px;
    padding: 10px 12px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-warm);
    color: var(--text);
    width: 100%;
    outline: none;
}

/* ===== 编辑器卡片 ===== */
.editor-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 48px;
}
.editor-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; flex-wrap: wrap;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-warm);
}
.tb-left, .tb-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tb-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 14px;
    border: 1.5px solid var(--border);
    background: white;
    border-radius: 8px;
    font-family: inherit;
    font-size: 13px; font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}
.tb-btn svg { width: 14px; height: 14px; }
.tb-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.tb-btn.accent { color: var(--primary); border-color: rgba(26,110,255,0.4); }

.editor-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 420px;
}
.editor-pane { display: flex; flex-direction: column; min-width: 0; }
.editor-pane:first-child { border-right: 1px solid var(--border); }
.pane-head {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    background: #fbfcfe;
}
.pane-dot { width: 10px; height: 10px; border-radius: 50%; }
.pane-dot.red { background: #ff5f57; }
.pane-dot.green { background: #28c840; }
.pane-title { font-size: 13px; font-weight: 700; color: var(--text); }
.pane-count { margin-left: auto; font-size: 11px; color: var(--text-light); font-family: var(--mono); }
.editor-pane textarea {
    flex: 1;
    width: 100%;
    min-height: 380px;
    border: none; outline: none; resize: vertical;
    padding: 16px;
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.75;
    color: var(--text);
    background: white;
    tab-size: 4;
}
.editor-pane textarea::placeholder { color: #b6bccb; }

/* ===== 状态栏 ===== */
.status-bar {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; flex-wrap: wrap;
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    background: var(--bg-warm);
    font-size: 12.5px;
}
.status-msg { color: var(--text-secondary); }
.status-bar.ok .status-msg { color: var(--success); }
.status-bar.err .status-msg { color: var(--danger); }
.status-meta { font-family: var(--mono); color: var(--text-light); white-space: nowrap; }

/* ===== 拖放遮罩 ===== */
.drop-mask {
    display: none;
    position: fixed; inset: 0; z-index: 2000;
    background: rgba(26, 110, 255, 0.08);
    backdrop-filter: blur(2px);
    align-items: center; justify-content: center;
}
.drop-mask.show { display: flex; }
.drop-inner {
    background: white;
    border: 2.5px dashed var(--primary);
    border-radius: var(--radius);
    padding: 48px 72px;
    text-align: center;
    color: var(--primary);
    box-shadow: var(--shadow-hover);
    pointer-events: none;
}
.drop-inner svg { width: 42px; height: 42px; margin-bottom: 12px; }
.drop-inner p { font-size: 15px; font-weight: 600; }

/* ===== 功能特性 ===== */
.section-head { text-align: center; max-width: 640px; margin: 0 auto 40px; }
.section-tag {
    display: inline-block;
    font-size: 12px; font-weight: 700;
    color: var(--primary);
    text-transform: uppercase; letter-spacing: 2px;
    margin-bottom: 10px;
    padding: 4px 16px;
    background: var(--primary-light);
    border-radius: 100px;
}
.section-title { font-size: clamp(22px, 3vw, 30px); font-weight: 800; color: var(--text); margin-bottom: 10px; }
.section-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }
.feature-section { padding: 24px 0 40px; }
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    transition: var(--transition);
}
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: rgba(26,110,255,0.2); }
.f-icon {
    width: 46px; height: 46px;
    background: var(--primary-light);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 16px;
}
.f-icon svg { width: 22px; height: 22px; color: var(--primary); }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.8; }

/* ===== FAQ ===== */
.faq-section { padding: 16px 0 8px; }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0 20px;
    transition: var(--transition);
}
.faq-item[open] { border-color: rgba(26,110,255,0.25); box-shadow: var(--shadow); }
.faq-item summary {
    padding: 15px 0;
    font-size: 14.5px; font-weight: 600;
    color: var(--text);
    cursor: pointer;
    list-style: none;
    position: relative;
    padding-right: 28px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    position: absolute; right: 4px; top: 50%;
    transform: translateY(-50%);
    font-size: 20px; font-weight: 400;
    color: var(--primary);
    transition: var(--transition);
}
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-item p { font-size: 13.5px; color: var(--text-secondary); line-height: 1.8; padding: 0 0 16px; }

/* ===== FOOTER（与官网一致） ===== */
.footer { background: var(--text); color: white; padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .logo-icon { margin-bottom: 16px; display: flex; align-items: flex-start; justify-content: flex-start; }
.footer-brand .logo-icon img { height: 84px; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.8; max-width: 320px; }
.footer-col h4 { font-size: 14px; font-weight: 700; margin-bottom: 20px; color: rgba(255,255,255,0.9); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.5); text-decoration: none; font-size: 14px; transition: var(--transition); }
.footer-col a:hover { color: white; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p, .footer-bottom a { font-size: 13px; color: rgba(255,255,255,0.4); }
.footer-bottom img { vertical-align: middle; }

/* ===== Toast ===== */
.toast {
    position: fixed;
    left: 50%; bottom: 32px;
    transform: translateX(-50%) translateY(20px);
    background: var(--text);
    color: white;
    font-size: 13.5px; font-weight: 500;
    padding: 12px 24px;
    border-radius: 100px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.25);
    opacity: 0; visibility: hidden;
    transition: var(--transition);
    z-index: 3000;
    max-width: calc(100vw - 48px);
    text-align: center;
}
.toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.toast.ok { background: var(--success); }
.toast.err { background: var(--danger); }

/* ===== 响应式（与官网断点策略一致） ===== */
@media (max-width: 1024px) {
    .capability-strip { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    /* 导航：与官网首页内联样式完全一致的汉堡菜单规则 */
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0; right: 0;
        background: white;
        flex-direction: column;
        padding: 16px 24px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        gap: 4px;
        border-bottom: 1px solid var(--border);
        z-index: 999;
    }
    .nav-links.active { display: flex; }
    .mobile-toggle { display: flex; }

    .page-header { padding: 112px 0 36px; }
    .tool-main { padding: 28px 0 56px; }
    .safe-banner { flex-direction: column; gap: 12px; padding: 18px; }
    .capability-strip { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .cap-item { padding: 14px 10px; }
    .cap-num { font-size: 20px; }

    .tool-tabs { padding: 0 4px; }
    .tab-btn { padding: 12px 16px; font-size: 13px; }
    .tab-panel { padding: 16px 14px 18px; }
    .ctrl-bar { flex-direction: column; align-items: stretch; }
    .ctrl-group select, .ctrl-group input[type="text"] { width: 100%; }
    .swap-btn { align-self: center; transform: rotate(90deg); margin: 2px 0; }
    .swap-btn:hover { transform: rotate(270deg); }
    .primary-btn, .ghost-btn { width: 100%; justify-content: center; }

    .radix-row { flex-direction: column; }
    .radix-out { grid-template-columns: 1fr 1fr; }
    .radix-item.wide { grid-column: 1 / -1; }

    .editor-toolbar { flex-direction: column; align-items: stretch; }
    .tb-left, .tb-right { justify-content: stretch; }
    .tb-btn { flex: 1; justify-content: center; padding: 10px 8px; }
    .editor-grid { grid-template-columns: 1fr; }
    .editor-pane:first-child { border-right: none; border-bottom: 1px solid var(--border); }
    .editor-pane textarea { min-height: 220px; }
    .status-bar { flex-direction: column; align-items: flex-start; gap: 4px; }

    .feature-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .drop-inner { padding: 32px 40px; }
}

@media (max-width: 480px) {
    .page-header h1 { font-size: 24px; }
    .radix-out { grid-template-columns: 1fr; }
    .capability-strip { grid-template-columns: 1fr 1fr; }
}