/* ─── Site header — "Fogueró" ─── */
.hdr {
    --hdr-logo-scale: 1.25;
    --hdr-pad-y: 0.45rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.85);
    -webkit-backdrop-filter: blur(10px) saturate(140%);
    backdrop-filter: blur(10px) saturate(140%);
    transition: transform .45s cubic-bezier(.22, .61, .36, 1);
    will-change: transform;
}

.hdr.is-hidden {
    transform: translateY(-110%);
}

.hdr::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: linear-gradient(to right,
        transparent 0%,
        rgba(245, 245, 245, 0.05) 15%,
        rgba(155, 27, 48, 0.55) 50%,
        rgba(245, 245, 245, 0.05) 85%,
        transparent 100%);
}

.hdr-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--hdr-pad-y) 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.hdr-mark {
    display: inline-flex;
    align-items: center;
    gap: .9rem;
    color: inherit;
    text-decoration: none;
}

.hdr-seal {
    position: relative;
    flex-shrink: 0;
    width: calc(44px * var(--hdr-logo-scale));
    height: calc(44px * var(--hdr-logo-scale));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at 50% 35%,
        rgba(155, 27, 48, 0.35) 0%,
        rgba(10, 10, 10, 0) 70%);
    transition: transform .4s ease;
}

.hdr-seal-tau,
.hdr-seal-dimoni {
    width: calc(22px * var(--hdr-logo-scale));
    height: calc(22px * var(--hdr-logo-scale));
    color: var(--text-primary);
}

.hdr-seal-tau {
    position: relative;
    z-index: 1;
    transition: transform .4s ease, opacity .4s ease;
}

.hdr-seal-dimoni {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    opacity: 0;
    transform: translateY(-3px);
    transition: opacity .4s ease;
}

.hdr-mark:hover .hdr-seal-tau {
    transform: translateY(-3px);
    opacity: 0;
}

.hdr-mark:hover .hdr-seal-dimoni {
    opacity: 1;
}

.hdr-wordmark-block {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.hdr-wordmark {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    letter-spacing: .02em;
    color: var(--text-primary);
}

.hdr-date {
    font-family: var(--font-mono);
    font-size: .65rem;
    letter-spacing: .28em;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-top: .3rem;
}

.hdr-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
    font-family: var(--font-heading);
    font-size: .9rem;
    letter-spacing: .04em;
}

.hdr-nav a {
    position: relative;
    padding: .4rem 0;
    color: var(--text-primary);
    text-decoration: none;
    transition: color .25s ease;
}

.hdr-nav a::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--vermell-brillant);
    transition: width .3s ease;
}

.hdr-nav a:hover::before {
    width: 100%;
}

.hdr-nav a.is-active::before {
    width: 100%;
    background: var(--vermell-foc);
}

.hdr-nav a:focus-visible {
    outline: 2px solid var(--vermell-brillant);
    outline-offset: 2px;
}

@media (max-width: 760px) {
    .hdr-inner {
        padding: var(--hdr-pad-y) 1.25rem;
        gap: 1rem;
    }
    .hdr-seal {
        width: calc(36px * var(--hdr-logo-scale));
        height: calc(36px * var(--hdr-logo-scale));
    }
    .hdr-seal-tau,
    .hdr-seal-dimoni {
        width: calc(18px * var(--hdr-logo-scale));
        height: calc(18px * var(--hdr-logo-scale));
    }
    .hdr-wordmark {
        font-size: 1.05rem;
    }
    .hdr-date {
        display: none;
    }
    .hdr-nav {
        gap: 1.1rem;
        font-size: .8rem;
    }
    .hdr-nav a::before {
        transition: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hdr,
    .hdr-inner,
    .hdr-wordmark,
    .hdr-seal,
    .hdr-seal-tau,
    .hdr-nav a,
    .hdr-nav a::before {
        transition: none !important;
    }
}