/* ==========================================================================
   CSS Variables & Design System
   ========================================================================== */
   :root {
    /* Colors */
    --clr-charcoal: #121212;
    --clr-charcoal-light: #1e1e1e;
    --clr-parchment: #f4ecd8;
    --clr-parchment-dark: #e8dbbf;
    --clr-amber: #d49a4a;
    --clr-amber-hover: #b88238;
    --clr-white: #ffffff;
    --clr-gray: #888888;
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-med: 0.4s ease;
    --transition-slow: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--clr-charcoal);
    color: var(--clr-parchment);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--clr-amber);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--clr-amber-hover);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-center {
    text-align: center;
}

.section-padding {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2.5rem;
    color: var(--clr-amber);
    margin-bottom: var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid var(--clr-amber);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background-color: var(--clr-amber);
    color: var(--clr-charcoal);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--clr-amber);
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.main-nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    padding: var(--spacing-sm) 0;
    transition: background-color var(--transition-fast), padding var(--transition-fast);
}

.main-nav.scrolled {
    background-color: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 83px;
    drop-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--clr-white);
    font-size: 1.08rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-links a:hover {
    color: var(--clr-amber);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120%; /* Extra height for parallax */
    background-image: url('assets/images/Kirkman - Overhead Shot.webp'); /* using Kirkman or Broadwood overhead */
    background-size: cover;
    background-position: center;
    z-index: 1;
    transform: translateZ(0); /* Hardware acceleration */
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(18,18,18,0.3) 0%, rgba(18,18,18,0.9) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: 0 var(--spacing-md);
}

.hero h1 {
    font-size: 4rem;
    color: var(--clr-white);
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.subheadline {
    font-size: 1.5rem;
    color: var(--clr-parchment);
    font-weight: 300;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    opacity: 0.7;
    animation: pulse 2s infinite;
}

.scroll-indicator span {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-indicator .line {
    width: 1px;
    height: 40px;
    background-color: var(--clr-amber);
}

@keyframes pulse {
    0% { opacity: 0.4; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(5px); }
    100% { opacity: 0.4; transform: translateX(-50%) translateY(0); }
}

/* ==========================================================================
   Philosophy Section
   ========================================================================== */
.philosophy {
    background-color: var(--clr-charcoal);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.lead-text {
    font-size: 1.5rem;
    font-family: var(--font-heading);
    max-width: 900px;
    margin: 0 auto;
    color: var(--clr-white);
    line-height: 1.8;
}

/* ==========================================================================
   Exhibit Section (Piano Demo)
   ========================================================================== */
.exhibit {
    background: linear-gradient(135deg, rgba(30, 22, 14, 0.97) 0%, rgba(42, 30, 18, 0.95) 50%, rgba(25, 18, 10, 0.97) 100%),
                url('assets/images/Sigal Collection 1 Photo Session - Broadwood 4.webp') center/cover no-repeat;
}

.exhibit-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.exhibit-info h3 {
    font-size: 2rem;
    color: var(--clr-white);
    margin-bottom: 0.3rem;
}

.exhibit-subtitle {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--clr-parchment);
    font-style: italic;
    margin-bottom: 0.3rem;
    opacity: 0.85;
}

.exhibit-collection {
    font-size: 0.9rem;
    color: var(--clr-amber);
    font-style: normal;
    margin-bottom: var(--spacing-md) !important;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-weight: 500;
    opacity: 0.7;
}

.exhibit-info p {
    margin-bottom: var(--spacing-sm);
    color: var(--clr-gray);
    font-size: 1.1rem;
}

.exhibit-collection a {
    color: var(--clr-amber);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.exhibit-collection a:hover {
    border-bottom-color: var(--clr-amber);
}

.exhibit-museum-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--clr-amber);
    font-size: 0.95rem;
    text-decoration: none;
    letter-spacing: 0.3px;
    transition: color var(--transition-fast);
}

.exhibit-museum-link:hover {
    color: var(--clr-parchment);
}

/* CTA: Play This Instrument (right column card) */
.exhibit-demo-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
}

.exhibit-cta {
    width: 100%;
}

.cta-card {
    background: rgba(18, 14, 10, 0.92);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: border-color var(--transition-med);
}

.cta-card:hover {
    border-color: rgba(212, 154, 74, 0.3);
}

.cta-card model-viewer {
    border-radius: 8px 8px 0 0;
    margin: -2.5rem -2rem 1.5rem -2rem;
    width: calc(100% + 4rem);
    background: transparent;
}

.cta-card h4 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--clr-white);
    margin-bottom: 0.8rem;
}

.cta-card > p {
    color: var(--clr-gray);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.btn-play {
    font-size: 1.1rem;
    padding: 1rem 2.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    animation: gentle-pulse 2.5s ease-in-out infinite;
}

.btn-play:hover {
    animation: none;
    transform: scale(1.03);
}

.cta-note {
    font-size: 0.8rem !important;
    color: #555 !important;
    margin-top: 1rem;
    margin-bottom: 0 !important;
}

@keyframes gentle-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(212, 154, 74, 0.3); }
    50% { box-shadow: 0 0 20px 4px rgba(212, 154, 74, 0.15); }
}

/* Close Demo Button */
#playable-demo {
    position: relative;
}

.demo-close-btn {
    position: absolute;
    top: 0;
    right: 0;
    width: 36px;
    height: 36px;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    color: var(--clr-gray);
    font-size: 1.3rem;
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.demo-close-btn:hover {
    background: rgba(212, 154, 74, 0.2);
    color: var(--clr-white);
    border-color: var(--clr-amber);
}

/* Piano Keyboard UI */
.piano-container {
    background-color: #000;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5), inset 0 2px 5px rgba(255,255,255,0.1);
    border: 1px solid #333;
    position: relative;
}

.piano-body {
    background-color: #1a0f0a; /* Dark wood hint */
    padding: 1.5rem;
    border-radius: 4px;
    box-shadow: inset 0 5px 15px rgba(0,0,0,0.8);
}

.piano-logo {
    text-align: center;
    font-family: var(--font-heading);
    color: #d4af37; /* Gold */
    font-size: 1.2rem;
    letter-spacing: 3px;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.piano-keys {
    display: flex;
    position: relative;
    list-style: none;
    height: 180px;
    width: max-content;
    margin: 0 auto;
    touch-action: none;
}

.white-key {
    width: 40px;
    height: 100%;
    background: linear-gradient(to bottom, #f9f9f9 0%, #e0e0e0 100%);
    border: 1px solid #ccc;
    border-radius: 0 0 3px 3px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2), inset 0 -1px 3px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1;
    cursor: pointer;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 10px;
    color: #888;
    font-size: 0.7rem;
    transition: background 0.1s;
    flex-shrink: 0;
}

.white-key.active {
    background: #d4d4d4;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2), inset 0 -1px 3px rgba(0,0,0,0.2);
    transform: scaleY(0.98);
    transform-origin: top;
}

.black-key {
    width: 24px;
    height: 60%;
    background: linear-gradient(to bottom, #333 0%, #000 100%);
    border-radius: 0 0 3px 3px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.5), inset 0 -1px 2px rgba(255,255,255,0.1);
    position: absolute;
    z-index: 2;
    cursor: pointer;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 15px;
    color: #555;
    font-size: 0.6rem;
    transition: background 0.1s;
}

.black-key.active {
    background: #111;
    box-shadow: 0 2px 3px rgba(0,0,0,0.5);
    transform: scaleY(0.98);
    transform-origin: top;
}

/* Black keys centered between white keys. White keys are 40px each.
   8 white keys: C=0, D=40, E=80, F=120, G=160, A=200, B=240, C5=280
   Black key center = white key boundary - half black key width (12px) */
.black-key[data-note="C#4"] { left: 28px; }
.black-key[data-note="D#4"] { left: 68px; }
.black-key[data-note="F#4"] { left: 148px; }
.black-key[data-note="G#4"] { left: 188px; }
.black-key[data-note="A#4"] { left: 228px; }
.piano-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    margin-top: 0.5rem;
}

.octave-switcher {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.octave-btn {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--clr-amber);
    width: 32px;
    height: 32px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.octave-btn:hover:not(:disabled) {
    background: rgba(212, 154, 74, 0.2);
    border-color: var(--clr-amber);
}

.octave-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.octave-label {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--clr-white);
    letter-spacing: 1px;
    min-width: 30px;
    text-align: center;
}

.midi-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--clr-gray);
    letter-spacing: 1px;
}

.midi-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #555;
    display: inline-block;
    transition: background 0.3s;
}

.midi-status.connected .midi-dot {
    background: #4ade80;
    box-shadow: 0 0 6px rgba(74, 222, 128, 0.5);
}

.midi-status.unavailable .midi-dot {
    background: #666;
}

.midi-status.active .midi-dot {
    background: #facc15;
    box-shadow: 0 0 6px rgba(250, 204, 21, 0.5);
}

.demo-instruction {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--clr-gray);
    letter-spacing: 1px;
}

.demo-instruction strong {
    color: var(--clr-amber);
}

.demo-instruction-mobile {
    display: none;
    text-align: center;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--clr-gray);
    letter-spacing: 1px;
}

.loading-indicator {
    text-align: center;
    padding: 0.5rem;
    font-size: 0.8rem;
    color: var(--clr-amber);
    letter-spacing: 1px;
    opacity: 0.8;
}

.loading-indicator .progress-bar {
    width: 100%;
    height: 3px;
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
    margin-top: 0.5rem;
    overflow: hidden;
}

.loading-indicator .progress-fill {
    height: 100%;
    background: var(--clr-amber);
    border-radius: 2px;
    transition: width 0.2s ease;
}

.exhibit-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.exhibit-gallery img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 4px;
    transition: transform var(--transition-med);
}

.exhibit-gallery img:hover {
    transform: scale(1.02);
}

/* ==========================================================================
   Rare Violins Section
   ========================================================================== */
.rare-violins {
    background: linear-gradient(135deg, #1a1008 0%, var(--clr-charcoal) 50%, #0d0a06 100%);
    border-top: 1px solid rgba(212, 154, 74, 0.15);
    border-bottom: 1px solid rgba(212, 154, 74, 0.15);
}

.rv-logo {
    max-width: 450px;
    height: auto;
    margin-bottom: 0.8rem;
    filter: brightness(1.1);
}

.rv-tagline {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-style: italic;
    color: var(--clr-parchment);
    opacity: 0.75;
    margin-top: 0;
    margin-bottom: var(--spacing-lg);
}

.rv-hero-image {
    width: 100%;
    border-radius: 6px;
    margin-bottom: var(--spacing-md);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.rv-dovid-photo {
    width: 100%;
    border-radius: 6px;
    margin-bottom: 1.2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    object-fit: cover;
    max-height: 280px;
}

.rv-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.rv-content p {
    color: var(--clr-gray);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.rv-details {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.rv-detail-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1rem;
    color: var(--clr-parchment);
}

.rv-detail-icon {
    font-size: 1.5rem;
    width: 40px;
    text-align: center;
    flex-shrink: 0;
}

.rv-player-bio {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 2rem;
}

.rv-player-bio h3 {
    font-size: 1.5rem;
    color: var(--clr-amber);
    margin-bottom: var(--spacing-sm);
}

.rv-player-bio p {
    color: var(--clr-gray);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

@media (max-width: 900px) {
    .rv-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Themes Grid
   ==========================================================================*/
.themes {
    background-color: var(--clr-parchment);
    color: var(--clr-charcoal);
}

.themes .section-title {
    color: var(--clr-charcoal);
}

.themes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.theme-card {
    background-color: var(--clr-white);
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: transform var(--transition-med);
}

.theme-card:hover {
    transform: translateY(-10px);
}

.theme-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.8rem;
    border-bottom: 2px solid rgba(0,0,0,0.06);
}

.theme-card p {
    color: #555;
    font-size: 1rem;
    line-height: 1.7;
}

/* ==========================================================================
   Partnerships & Footer
   ========================================================================== */
.partnerships {
    background-color: var(--clr-charcoal-light);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.partners-logos {
    margin-bottom: var(--spacing-lg);
}

.partner-logo {
    max-width: 300px;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.partner-logo:hover {
    opacity: 1;
}

.partners-content {
    max-width: 700px;
    margin: 0 auto;
}

.partners-content p {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
    color: var(--clr-gray);
}

.main-footer {
    background-color: #0a0a0a;
    padding: var(--spacing-lg) 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    height: 63px;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.footer-about p {
    color: var(--clr-gray);
    font-size: 0.9rem;
}

.footer-links h4, .footer-contact h4 {
    color: var(--clr-white);
    margin-bottom: 1rem;
    font-family: var(--font-body);
    font-size: 1.1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--clr-gray);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--clr-amber);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: var(--clr-gray);
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: #444;
    font-size: 0.8rem;
}

/* ==========================================================================
   Animations & Micro-interactions
   ========================================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 900px) {
    /* Nav: stack links below logo */
    .nav-container {
        flex-direction: column;
        gap: 0.8rem;
        padding: 0.8rem 1rem;
    }
    .nav-links {
        gap: var(--spacing-sm);
        flex-wrap: wrap;
        justify-content: center;
    }
    .nav-links a {
        font-size: 0.8rem;
    }
    .logo img {
        height: 50px;
    }

    /* Hero */
    .hero h1 {
        font-size: 2.2rem;
    }
    .subheadline {
        font-size: 1rem;
    }

    /* Grids → single column */
    .exhibit-grid {
        grid-template-columns: 1fr;
    }
    .rv-grid {
        grid-template-columns: 1fr;
    }
    .themes-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .exhibit-gallery {
        grid-template-columns: 1fr;
    }

    /* 3D model smaller on mobile */
    .cta-card model-viewer {
        height: 220px !important;
    }

    /* Piano: fit viewport width */
    .exhibit-demo-wrapper {
        width: 100%;
    }
    .exhibit-demo {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
    }
    .piano-container {
        padding: 0.5rem;
        overflow: hidden;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    .piano-body {
        padding: 0.8rem;
        overflow: hidden;
    }
    .piano-keys {
        width: 100% !important;
        height: 120px;
    }
    .white-key {
        width: 12.5% !important; /* 8 white keys = 100% */
        min-width: 0 !important;
        flex-shrink: 1 !important;
        font-size: 0.55rem;
        padding-bottom: 6px;
    }
    .black-key {
        width: 9% !important;
        height: 55%;
        font-size: 0.45rem;
    }
    .piano-logo {
        font-size: 0.9rem;
        margin-bottom: 0.8rem;
    }

    /* Piano controls: stack and center */
    .piano-controls {
        flex-direction: column;
        gap: 0.5rem;
        align-items: center;
    }

    /* Hide MIDI status and desktop-only instruction text on mobile */
    .midi-status {
        display: none;
    }
    .demo-instruction {
        display: none;
    }
    .demo-instruction-mobile {
        display: block;
    }

    /* Hide QWERTY key labels on mobile */
    .white-key span,
    .black-key span {
        display: none;
    }

    /* RV logo: center on mobile */
    .rv-logo {
        display: block;
        margin-left: auto;
        margin-right: auto;
        max-width: 280px;
    }

    /* Section padding */
    .section-padding {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    /* Typography */
    .section-title {
        font-size: 1.8rem;
    }
    .lead-text {
        font-size: 1rem;
    }
    .exhibit-info h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .themes-grid {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
    .nav-links a {
        font-size: 0.7rem;
        letter-spacing: 0.5px;
    }
}