/* ══════════════════════════════════════════════════════════════════════
   NAV HAMBURGER MENU — theme-aware (usa vars globales).
   Dark en home/perfil/lab (app.css), light en /space (sala.css).
   Se inyecta con /js/nav-menu.js dentro de <nav> o .home-top.
   ══════════════════════════════════════════════════════════════════════ */

.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 10000;
    margin-left: 10px;
    flex-shrink: 0;
}
@media (max-width: 900px) {
    .nav-hamburger { display: flex; }
}
.nav-hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--paper, #1a0f28);
    border-radius: 0;
    transition: transform 0.25s ease, opacity 0.25s ease, background 0.25s ease;
    transform-origin: center;
}
body.nav-open .nav-hamburger span:nth-child(1) { transform: translateY(9px) rotate(45deg); background: var(--accent, #a78bfa); }
body.nav-open .nav-hamburger span:nth-child(2) { opacity: 0; }
body.nav-open .nav-hamburger span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); background: var(--accent, #a78bfa); }

/* Overlay backdrop — usa color-mix del canvas (dark o light) */
.nav-menu {
    position: fixed;
    inset: 0;
    background: color-mix(in srgb, var(--night, #0a0a0f) 55%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 9998;
}
body.nav-open .nav-menu { opacity: 1; pointer-events: auto; }

.nav-menu-panel {
    position: absolute;
    top: 74px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 260px;
    padding: 8px;
    background: var(--panel-night, rgba(255, 255, 255, 0.92));
    border: 1px solid var(--border-night, rgba(255, 255, 255, 0.10));
    border-radius: var(--radius, 14px);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    transform: translateY(-10px);
    transition: transform 0.25s ease;
    overflow: hidden;
}
body.nav-open .nav-menu-panel { transform: translateY(0); }

.nav-menu-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent, #a78bfa), var(--accent-2, #60a5fa) 55%, var(--accent-3, #34d399));
}

.nav-menu-panel a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.4px;
    color: var(--paper, #f0f0f0);
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-sm, 10px);
    text-transform: uppercase;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.nav-menu-panel a:hover {
    background: var(--panel-night-2, rgba(255, 255, 255, 0.07));
    border-color: var(--border-night, rgba(255, 255, 255, 0.10));
    color: var(--paper, #f0f0f0);
}
.nav-menu-panel a.is-current {
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent, #a78bfa) 18%, transparent), color-mix(in srgb, var(--accent-2, #60a5fa) 14%, transparent));
    border-color: color-mix(in srgb, var(--accent, #a78bfa) 45%, transparent);
    color: var(--paper, #f0f0f0);
}
.nav-menu-panel a .nav-menu-arrow {
    font-size: 14px;
    color: var(--ink-3, rgba(255, 255, 255, 0.35));
    font-weight: 700;
    transition: color 0.15s, transform 0.15s;
}
.nav-menu-panel a:hover .nav-menu-arrow {
    color: var(--accent, #a78bfa);
    transform: translateX(2px);
}
.nav-menu-panel a.is-current .nav-menu-arrow { color: var(--accent, #a78bfa); }

@media (max-width: 900px) {
    .nav-menu-panel {
        top: 64px;
        left: 16px;
        right: 16px;
        min-width: 0;
    }
}

/* Bloquear scroll del body cuando el menú está abierto */
body.nav-open { overflow: hidden; }