/* ═══════════════════════════════════════════════════════════════
   MUSEO DELLE VOCI ARTIFICIALI
   Opera Page Styles
   ═══════════════════════════════════════════════════════════════ */

/* ─── Theme Variants ────────────────────────────────────────── */
.opera-page--blue {
    --opera-accent: var(--blu-glow);
    --opera-accent-dark: var(--blu-abissale);
    --opera-glow: rgba(0, 180, 216, 0.3);
}

.opera-page--gold {
    --opera-accent: var(--oro-antico);
    --opera-accent-dark: var(--oro-scuro);
    --opera-glow: rgba(201, 162, 39, 0.3);
}

.opera-page--red {
    --opera-accent: var(--rosso-luminoso);
    --opera-accent-dark: var(--rosso-sangue);
    --opera-glow: rgba(220, 38, 38, 0.3);
}

.opera-page--white {
    --opera-accent: var(--bianco);
    --opera-accent-dark: var(--grigio);
    --opera-glow: rgba(255, 255, 255, 0.2);
}

/* ═══════════════════════════════════════════════════════════════
   FULL-WIDTH HEADER — Museum Navigation Bar
   ═══════════════════════════════════════════════════════════════ */

.museo-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 0 3rem;
    height: 64px;

    background: linear-gradient(
        180deg,
        rgba(8, 8, 8, 0.96) 0%,
        rgba(5, 5, 5, 0.92) 100%
    );
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);

    border-bottom: 1px solid rgba(201, 162, 39, 0.12);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.02) inset,
        0 4px 24px rgba(0, 0, 0, 0.4);

    opacity: 0;
    transform: translateY(-100%);
    animation: headerReveal 0.8s cubic-bezier(0.23, 1, 0.32, 1) 0.3s forwards;
}

@keyframes headerReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Left section - Navigation */
.museo-header__nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.museo-header__atrio {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(245, 245, 245, 0.8);
    text-decoration: none;

    display: flex;
    align-items: center;
    gap: 0.5rem;

    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: 1px solid rgba(201, 162, 39, 0.2);
    background: rgba(201, 162, 39, 0.04);

    transition: all 0.3s ease;
}

.museo-header__atrio::before {
    content: '←';
    font-size: 0.85rem;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.museo-header__atrio:hover {
    color: var(--oro-antico);
    background: rgba(201, 162, 39, 0.1);
    border-color: rgba(201, 162, 39, 0.4);
}

.museo-header__atrio:hover::before {
    opacity: 1;
    transform: translateX(-3px);
}

/* Center section - Brand */
.museo-header__brand {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);

    display: flex;
    align-items: center;
    gap: 1.25rem;
}

/* ─── M.V.S. Logo Section ─── */
.museo-header__logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding-right: 1.25rem;
    border-right: 1px solid rgba(201, 162, 39, 0.25);
}

/* Diamond icon - frame with inner solid diamond */
.museo-header__logo-diamond {
    position: relative;
    width: 14px;
    height: 14px;
    background: transparent;
    border: 1.5px solid var(--oro-antico);
    transform: rotate(45deg);
    box-shadow: 0 0 8px rgba(201, 162, 39, 0.3);
    transition: all 0.4s ease;
}

.museo-header__logo-diamond::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 6px;
    background: linear-gradient(135deg, var(--oro-antico) 0%, var(--oro-chiaro, #d4af37) 50%, var(--oro-antico) 100%);
    transform: translate(-50%, -50%);
    box-shadow: 0 0 6px rgba(201, 162, 39, 0.5);
    transition: all 0.4s ease;
}

.museo-header__brand:hover .museo-header__logo-diamond {
    border-color: var(--oro-chiaro, #d4af37);
    box-shadow: 0 0 12px rgba(201, 162, 39, 0.5);
}

.museo-header__brand:hover .museo-header__logo-diamond::before {
    box-shadow: 0 0 10px rgba(201, 162, 39, 0.7);
}

/* M.V.S. text */
.museo-header__logo-text {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    color: var(--oro-antico);
    text-shadow: 0 0 20px rgba(201, 162, 39, 0.3);
    transition: all 0.4s ease;
}

.museo-header__brand:hover .museo-header__logo-text {
    color: var(--oro-chiaro, #d4af37);
    text-shadow: 0 0 25px rgba(201, 162, 39, 0.5);
}

/* Main Brand Text */
.museo-header__brand-text {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.2rem;
    font-weight: 600;
    font-style: italic;
    letter-spacing: 0.1em;
    color: var(--oro-chiaro, #d4af37);
    white-space: nowrap;
    text-shadow:
        0 0 35px rgba(201, 162, 39, 0.4),
        0 0 60px rgba(201, 162, 39, 0.2),
        0 1px 2px rgba(0, 0, 0, 0.4);
    transition: all 0.4s ease;
}

.museo-header__brand:hover .museo-header__brand-text {
    color: #e5c97a;
    text-shadow:
        0 0 45px rgba(201, 162, 39, 0.5),
        0 0 80px rgba(201, 162, 39, 0.3);
}

/* Right section - Container for Language + Controls */
.museo-header__right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Language Selector */
.museo-header__lang {
    display: flex;
    align-items: center;
    gap: 0.25rem;

    padding: 4px;
    background: rgba(201, 162, 39, 0.06);
    border: 1px solid rgba(201, 162, 39, 0.15);
    border-radius: 6px;

    transition: all 0.3s ease;
}

.museo-header__lang:hover {
    background: rgba(201, 162, 39, 0.1);
    border-color: rgba(201, 162, 39, 0.25);
}

.museo-header__lang-btn {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1em;

    color: rgba(245, 245, 245, 0.5);
    background: transparent;
    border: none;

    padding: 0.4rem 0.7rem;
    border-radius: 4px;

    cursor: pointer;
    transition: all 0.25s ease;
}

.museo-header__lang-btn:hover:not(.active) {
    color: rgba(245, 245, 245, 0.8);
    background: rgba(255, 255, 255, 0.05);
}

.museo-header__lang-btn.active {
    color: #0a0a0a;
    background: linear-gradient(
        135deg,
        #c9a227 0%,
        #d4af37 100%
    );
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(201, 162, 39, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
    .museo-header {
        padding: 0 1.25rem;
        height: 58px;
    }

    .museo-header__brand {
        display: none;
    }

    .museo-header__right {
        gap: 0.75rem;
    }

    .museo-header__atrio {
        font-size: 0.65rem;
    }

    .museo-header__lang-btn {
        font-size: 0.65rem;
        padding: 0.35rem 0.6rem;
    }

    .museo-header__controls {
        gap: 0.5rem;
    }
}

/* ─── Ambient Background ────────────────────────────────────── */
.opera__ambient {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.opera__ambient-layer {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 20%, var(--opera-glow) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, var(--opera-glow) 0%, transparent 40%),
        var(--nero-profondo);
}

.opera__particles {
    position: absolute;
    inset: 0;
}

/* ─── Navigation Override ───────────────────────────────────── */
.opera-page .nav {
    display: flex;
    justify-content: space-between;
    background: linear-gradient(to bottom, rgba(10, 10, 10, 0.98), rgba(10, 10, 10, 0.8));
}

.nav__back {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--grigio);
    transition: color var(--transition-fast);
}

.nav__back:hover {
    color: var(--opera-accent);
}

/* ─── Hero ──────────────────────────────────────────────────── */
.opera__hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    padding: calc(var(--space-xl) + 80px) var(--space-lg) var(--space-xl);
    position: relative;
    z-index: var(--z-content);
}

.opera__vitrine {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.opera__book {
    position: relative;
    transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
    animation: bookFloat 6s ease-in-out infinite;
}

@keyframes bookFloat {
    0%, 100% { transform: perspective(1000px) rotateY(-10deg) rotateX(5deg) translateY(0); }
    50% { transform: perspective(1000px) rotateY(-10deg) rotateX(5deg) translateY(-15px); }
}

.opera__cover {
    width: 200px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    box-shadow:
        8px 8px 0 rgba(0,0,0,0.4),
        20px 20px 60px rgba(0,0,0,0.6);
    position: relative;
    overflow: hidden;
}

/* Cover with real image */
.opera__cover--image {
    padding: 0;
}

.opera__cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.opera__cover::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 15px;
    background: linear-gradient(90deg, rgba(0,0,0,0.4), transparent);
    z-index: 1;
}

.opera-page--blue .opera__cover {
    background: linear-gradient(135deg, #0a1628 0%, var(--blu-abissale) 50%, #0a1628 100%);
}

.opera-page--gold .opera__cover {
    background: linear-gradient(135deg, var(--oro-scuro) 0%, var(--oro-antico) 50%, var(--oro-scuro) 100%);
}

.opera-page--red .opera__cover {
    background: linear-gradient(135deg, #4a0000 0%, var(--rosso-sangue) 50%, #4a0000 100%);
}

.opera-page--white .opera__cover {
    background: linear-gradient(135deg, #d8d8d8 0%, #f5f5f5 50%, #d8d8d8 100%);
}

.opera__book-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    line-height: 1.3;
    color: var(--bianco);
}

.opera-page--white .opera__book-title {
    color: var(--nero-profondo);
}

.opera__glow {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--opera-glow);
    filter: blur(80px);
    z-index: -1;
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* ─── Info Panel ────────────────────────────────────────────── */
.opera__info {
    padding-right: var(--space-lg);
}

.opera__id {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--opera-accent);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--opera-accent);
    margin-bottom: var(--space-md);
}

.opera__title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--opera-accent);
    margin-bottom: var(--space-xs);
}

.opera__subtitle {
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--grigio);
    margin-bottom: var(--space-lg);
}

.opera__meta {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding: var(--space-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.opera__meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.opera__meta-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    color: var(--grigio);
    text-transform: uppercase;
}

.opera__meta-value {
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--bianco);
}

.opera__actions {
    display: flex;
    gap: var(--space-sm);
}

.opera__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: all var(--transition-fast);
}

.opera__btn--primary {
    background: var(--opera-accent);
    color: var(--nero-profondo);
}

.opera__btn--primary:hover {
    filter: brightness(1.2);
    transform: translateY(-2px);
}

.opera__btn--secondary {
    background: transparent;
    border: 1px solid var(--grigio-scuro);
    color: var(--grigio);
}

.opera__btn--secondary:hover {
    border-color: var(--opera-accent);
    color: var(--opera-accent);
}

/* ─── Card Section ──────────────────────────────────────────── */
.opera__card {
    position: relative;
    z-index: var(--z-content);
    padding: var(--space-xl) var(--space-lg);
    background: var(--nero-soft);
}

.opera__card-content {
    max-width: 800px;
    margin: 0 auto;
}

.opera__card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--opera-accent);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.opera__description {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--grigio);
}

.opera__description p {
    margin-bottom: var(--space-md);
}

.opera__description strong {
    color: var(--bianco);
    font-weight: 500;
}

.opera__warning {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: rgba(201, 162, 39, 0.1);
    border-left: 2px solid var(--oro-antico);
    margin-top: var(--space-lg);
}

.opera__warning-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.opera__warning p {
    font-size: 0.9rem;
    color: var(--grigio);
    line-height: 1.6;
}

/* ─── Section Titles ────────────────────────────────────────── */
.opera__section-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--bianco);
    text-align: center;
    margin-bottom: var(--space-lg);
}

/* ─── Quotes Section ────────────────────────────────────────── */
.opera__quotes {
    position: relative;
    z-index: var(--z-content);
    padding: var(--space-xl) var(--space-lg);
    background: var(--nero-profondo);
}

.opera__quotes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
}

.opera__quote {
    padding: var(--space-lg);
    background: var(--nero-card);
    border-left: 2px solid var(--opera-accent);
    position: relative;
}

.opera__quote::before {
    content: '"';
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    font-family: var(--font-display);
    font-size: 4rem;
    color: var(--opera-accent);
    opacity: 0.2;
    line-height: 1;
}

.opera__quote p {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-style: italic;
    line-height: 1.8;
    color: var(--grigio);
    margin-bottom: var(--space-sm);
}

.opera__quote cite {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-style: normal;
    color: var(--grigio-scuro);
}

/* ─── Structure Section ─────────────────────────────────────── */
.opera__structure {
    position: relative;
    z-index: var(--z-content);
    padding: var(--space-xl) var(--space-lg);
    background: var(--nero-soft);
}

.opera__chapters {
    max-width: 600px;
    margin: 0 auto;
}

.opera__zone {
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-sm);
    position: relative;
    border-left: 3px solid;
}

.opera__zone--epi {
    border-color: #00b4d8;
    background: linear-gradient(90deg, rgba(0, 180, 216, 0.05), transparent);
}

.opera__zone--meso {
    border-color: #0077b6;
    background: linear-gradient(90deg, rgba(0, 119, 182, 0.05), transparent);
}

.opera__zone--bati {
    border-color: #023e8a;
    background: linear-gradient(90deg, rgba(2, 62, 138, 0.05), transparent);
}

.opera__zone--abisso {
    border-color: #03045e;
    background: linear-gradient(90deg, rgba(3, 4, 94, 0.1), transparent);
}

.opera__zone-label {
    display: block;
    font-family: var(--font-display);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    color: var(--bianco);
    margin-bottom: 0.25rem;
}

.opera__zone-depth {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.1em;
    color: var(--grigio);
    margin-bottom: var(--space-sm);
}

.opera__chapter-list {
    list-style: none;
    font-size: 0.9rem;
    color: var(--grigio);
}

.opera__chapter-list li {
    padding: 0.25rem 0;
}

/* ─── Compare Section ───────────────────────────────────────── */
.opera__compare {
    position: relative;
    z-index: var(--z-content);
    padding: var(--space-xl) var(--space-lg);
    background: var(--nero-profondo);
}

.opera__compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
    max-width: 1000px;
    margin: 0 auto;
}

.opera__compare-card {
    padding: var(--space-lg);
    background: var(--nero-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-medium);
}

.opera__compare-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.1);
}

.opera__compare-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    color: var(--grigio);
    text-transform: uppercase;
    margin-bottom: var(--space-xs);
}

.opera__compare-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.opera__compare-card--gold h3 { color: var(--oro-antico); }
.opera__compare-card--blue h3 { color: var(--blu-glow); }
.opera__compare-card--white h3 { color: var(--bianco); }
.opera__compare-card--red h3 { color: var(--rosso-luminoso); }

.opera__compare-card p {
    font-size: 0.9rem;
    color: var(--grigio);
}

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 968px) {
    .opera__hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: calc(var(--space-xl) + 100px);
    }

    .opera__vitrine {
        margin-bottom: var(--space-lg);
    }

    .opera__info {
        padding-right: 0;
    }

    .opera__actions {
        justify-content: center;
    }
}

@media (max-width: 600px) {
    .opera__meta {
        grid-template-columns: 1fr;
    }

    .opera__actions {
        flex-direction: column;
    }

    .opera__btn {
        justify-content: center;
    }
}