/* Legion Front 实验页。视觉跟 Lab 首页同一套：深色底、Orbitron 标题、青色点缀。 */

:root {
    --primary: #00f2ff;
    --secondary: #ff00ff;
    --bg-deep: #060610;
    --bg-card: rgba(15, 20, 40, 0.7);
    --text-primary: #e2e8f0;
    --text-secondary: #7a8ba8;
    --border-subtle: rgba(255, 255, 255, 0.06);
    --radius: 16px;
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    background: var(--bg-deep);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; transition: color 0.2s ease; }

.grid-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(rgba(0, 242, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 242, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.site-header {
    background: rgba(6, 6, 16, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.9rem 0;
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i { color: var(--primary); filter: drop-shadow(0 0 6px var(--primary)); }

.logo span {
    background: linear-gradient(to right, #fff, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links { display: flex; list-style: none; gap: 28px; }

.nav-links a {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
    box-shadow: 0 0 8px var(--primary);
}

.nav-links a:hover,
.nav-links a.active { color: var(--primary); }

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary);
    background: none;
    border: none;
}

.page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.6rem 24px 3rem;
}

.crumbs {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
}

.crumbs a:hover { color: var(--primary); }

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    border-radius: 999px;
    background: rgba(255, 200, 0, 0.1);
    border: 1px solid rgba(255, 200, 0, 0.28);
    color: #ffd54f;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    margin-bottom: 0.8rem;
}

h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 900;
    letter-spacing: 1px;
    line-height: 1.1;
    margin-bottom: 0.7rem;
}

.lede {
    max-width: 68ch;
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 1rem;
}

.notice {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 0.85rem 1rem;
    border-radius: 12px;
    background: rgba(255, 200, 0, 0.06);
    border: 1px solid rgba(255, 200, 0, 0.22);
    color: #f3e6b8;
    font-size: 0.92rem;
    margin-bottom: 1.2rem;
}

.notice strong { color: #ffd54f; }

.stage-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.stage-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 0.7rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.stage-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.stage-actions a,
.gate button,
.text-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: 8px;
    background: rgba(0, 242, 255, 0.1);
    color: var(--primary);
    border: 1px solid rgba(0, 242, 255, 0.25);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.4px;
    cursor: pointer;
}

.stage-actions a:hover,
.gate button:hover { background: var(--primary); color: #041016; }

/* 语言设置：两个按钮一直都在，当前语言高亮。 */
.lang-switch {
    display: inline-flex;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(0, 242, 255, 0.25);
}
.lang-switch button {
    appearance: none;
    border: 0;
    background: rgba(0, 242, 255, 0.08);
    color: var(--primary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.4px;
    padding: 7px 10px;
    cursor: pointer;
}
.lang-switch button + button { border-left: 1px solid rgba(0, 242, 255, 0.25); }
.lang-switch button[aria-pressed="true"] { background: var(--primary); color: #041016; }

.stage {
    position: relative;
    background: #0b0f0b;
    aspect-ratio: 16 / 9;
    min-height: 420px;
}

.stage iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
    background: #0b0f0b;
}

.gate {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 12px;
    padding: 1.5rem;
    background:
        linear-gradient(180deg, rgba(6, 8, 6, 0.2), rgba(6, 8, 6, 0.82)),
        url('assets/thumb-battle-1280x720.jpg') center / cover no-repeat;
}

.gate[hidden] { display: none; }

.gate h2 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: 1px;
}

.gate p { max-width: 46ch; color: #d5decc; }

.hint {
    padding: 0.65rem 1rem 0.8rem;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.panel {
    margin-top: 1.6rem;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 18px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.3rem 1.4rem 1.4rem;
}

.card h2 {
    font-family: var(--font-display);
    font-size: 0.95rem;
    letter-spacing: 1px;
    margin-bottom: 0.8rem;
}

.card p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 0.7rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }

th, td {
    text-align: left;
    padding: 0.45rem 0.3rem;
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: top;
}

th { color: #fff; font-weight: 600; width: 42%; }

td { color: var(--text-secondary); }

kbd {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 1px 6px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.04);
    color: #fff;
}

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 0.4rem; }

.tag {
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.68rem;
    font-family: var(--font-mono);
    background: rgba(0, 242, 255, 0.08);
    color: var(--primary);
    border: 1px solid rgba(0, 242, 255, 0.2);
}

details { margin-top: 0.6rem; color: var(--text-secondary); }
summary { cursor: pointer; color: #fff; margin-bottom: 0.3rem; }

.site-footer {
    background: #020617;
    border-top: 1px solid var(--border-subtle);
    padding: 3rem 24px 1.5rem;
    margin-top: 3rem;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    margin-bottom: 1rem;
}

.footer-logo i { color: var(--primary); }

.footer-brand p { font-size: 0.88rem; color: var(--text-secondary); }

.footer-col h2 {
    font-family: var(--font-display);
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.footer-col h2::after {
    content: '';
    display: block;
    width: 30px;
    height: 2px;
    background: var(--primary);
    margin-top: 6px;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.7rem; }
.footer-col a { font-size: 0.85rem; color: var(--text-secondary); }
.footer-col a:hover { color: var(--primary); }

.copyright {
    text-align: center;
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.8rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

@media (max-width: 800px) {
    .panel, .footer-inner { grid-template-columns: 1fr; }
    .menu-btn { display: block; }
    .nav-links {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(6, 6, 16, 0.96);
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
        border-bottom: 1px solid var(--border-subtle);
    }
    .nav-links.active { display: flex; }
    .nav-links a { display: block; padding: 0.85rem 30px; }
    .nav-links a::after { display: none; }
    .stage { min-height: 240px; }
    .stage-bar { flex-direction: column; align-items: flex-start; }
}