/* ============================================================
   NAVBAR — fijo, glass, hacker green
   ============================================================ */

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    background: rgba(8, 9, 10, 0.55);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    border-bottom: 1px solid var(--border-1);
    transition:
        height 350ms var(--ease-out),
        background 350ms var(--ease-out),
        backdrop-filter 350ms var(--ease-out),
        border-color 350ms var(--ease-out);
}

.site-nav.is-scrolled {
    height: var(--nav-height-scrolled);
    background: rgba(8, 9, 10, 0.85);
    border-bottom-color: var(--border-2);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.site-nav__inner {
    max-width: var(--container);
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--sp-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-5);
}

/* ---- Brand ---- */
.site-nav__brand {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--text-1);
    letter-spacing: var(--tr-mono);
    text-transform: uppercase;
    font-weight: 500;
}

.site-nav__brand-prompt {
    color: var(--green-1);
    text-shadow: var(--glow-sm);
}

.site-nav__brand-cursor {
    display: inline-block;
    width: 8px;
    height: 14px;
    background: var(--green-1);
    margin-left: 2px;
    animation: caret 1.1s steps(1) infinite;
    vertical-align: middle;
    box-shadow: var(--glow-sm);
}

@keyframes caret {
    0%, 49%   { opacity: 1; }
    50%, 100% { opacity: 0; }
}

/* ---- Links ---- */
.site-nav__links {
    display: flex;
    align-items: center;
    gap: var(--sp-6);
    list-style: none;
    padding: 0;
    margin: 0;
}

.site-nav__link {
    position: relative;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: 500;
    letter-spacing: var(--tr-mono);
    text-transform: uppercase;
    color: var(--text-2);
    padding: var(--sp-2) 0;
    transition: color var(--dur-fast) var(--ease-out);
}

.site-nav__link::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    height: 1px;
    width: 100%;
    background: var(--green-1);
    box-shadow: var(--glow-sm);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 220ms var(--ease-out);
}

.site-nav__link:hover,
.site-nav__link.is-active {
    color: var(--text-1);
}

.site-nav__link:hover::before,
.site-nav__link.is-active::before {
    transform: scaleX(1);
}

.site-nav__link-num {
    color: var(--green-muted);
    margin-right: var(--sp-2);
    font-size: 0.7em;
    opacity: 0.8;
}

/* ---- Status badge ---- */
.site-nav__status {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: 6px 12px;
    border: 1px solid var(--border-2);
    border-radius: var(--radius-pill);
    background: rgba(0, 255, 106, 0.04);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: var(--tr-mono);
    text-transform: uppercase;
    color: var(--text-1);
}

.site-nav__status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--green-1);
    box-shadow: 0 0 8px var(--green-1);
    animation: pulse 2s var(--ease-in-out) infinite;
}

/* ---- Hamburger (mobile) ---- */
.site-nav__toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 1px solid var(--border-2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
    position: relative;
    align-items: center;
    justify-content: center;
}

.site-nav__toggle span,
.site-nav__toggle span::before,
.site-nav__toggle span::after {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--green-1);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    transition: transform var(--dur) var(--ease-out),
                opacity var(--dur-fast) var(--ease-out),
                top var(--dur) var(--ease-out);
    box-shadow: var(--glow-sm);
}

.site-nav__toggle span {
    top: 50%;
    margin-top: -1px;
}

.site-nav__toggle span::before,
.site-nav__toggle span::after {
    content: '';
    left: 0;
    transform: none;
}

.site-nav__toggle span::before { top: -7px; }
.site-nav__toggle span::after  { top:  7px; }

.site-nav.is-open .site-nav__toggle span {
    background: transparent;
    box-shadow: none;
}
.site-nav.is-open .site-nav__toggle span::before {
    top: 0;
    transform: rotate(45deg);
}
.site-nav.is-open .site-nav__toggle span::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .site-nav__toggle { display: inline-flex; }

    .site-nav__links {
        position: fixed;
        inset: var(--nav-height) 0 0 0;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--sp-6);
        padding: var(--sp-7) var(--sp-5);
        background: rgba(8, 9, 10, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        transform: translateY(-110%);
        transition: transform var(--dur-slow) var(--ease-out);
        z-index: var(--z-nav);
    }

    .site-nav.is-open .site-nav__links {
        transform: translateY(0);
    }

    .site-nav__link {
        font-size: var(--fs-md);
        padding: 12px 20px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        opacity: 0;
        transform: translateY(10px);
        transition:
            opacity 450ms var(--ease-out),
            transform 450ms var(--ease-out),
            color var(--dur-fast) var(--ease-out);
    }

    .site-nav.is-open .site-nav__link {
        opacity: 1;
        transform: translateY(0);
    }
    .site-nav.is-open .site-nav__link:nth-child(1) { transition-delay: 120ms; }
    .site-nav.is-open .site-nav__link:nth-child(2) { transition-delay: 180ms; }
    .site-nav.is-open .site-nav__link:nth-child(3) { transition-delay: 240ms; }
    .site-nav.is-open .site-nav__link:nth-child(4) { transition-delay: 300ms; }
    .site-nav.is-open .site-nav__link:nth-child(5) { transition-delay: 360ms; }
    .site-nav.is-open .site-nav__link:nth-child(6) { transition-delay: 420ms; }

    .site-nav__status {
        display: none;
    }
}

@media (max-width: 480px) {
    .site-nav__inner {
        padding: 0 var(--sp-4);
    }
    .site-nav__brand {
        font-size: var(--fs-xs);
    }
}