/* ============================================
   VOYNICH WITH IMAGES - Unified Stylesheet
   HAVE MIND MEDIA
   ============================================ */

/* CSS Variables */
:root {
    --bg-dark: #1a1410;
    --bg-medium: #2d2319;
    --text-primary: #d4c4a8;
    --text-secondary: #a89878;
    --text-muted: #8a7a5a;
    --accent-gold: #b49664;
    --accent-light: #e6d4b8;
    --border-color: rgba(180, 150, 100, 0.3);
    --border-hover: rgba(180, 150, 100, 0.4);
    --card-bg: linear-gradient(145deg, rgba(45, 35, 25, 0.8), rgba(30, 22, 15, 0.9));
    --font-main: 'Crimson Text', Georgia, serif;
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-medium) 50%, var(--bg-dark) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.7;
}

/* Navigation */
nav {
    position: sticky;
    top: 0;
    background: rgba(26, 20, 16, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    padding: 15px 0;
}

nav ul {
    display: flex;
    justify-content: center;
    gap: 20px;
    list-style: none;
    flex-wrap: wrap;
    padding: 0 15px;
}

nav a {
    color: var(--accent-gold);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: color 0.3s;
    text-transform: uppercase;
    padding: 5px 10px;
}

nav a:hover,
nav a.active {
    color: var(--accent-light);
}

nav a.active {
    border-bottom: 2px solid var(--accent-gold);
    padding-bottom: 3px;
}

/* Page Header */
.page-header {
    text-align: center;
    padding: 50px 20px 30px;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--accent-light);
    letter-spacing: 3px;
}

.page-header .d-info {
    display: inline-block;
    background: rgba(180, 150, 100, 0.15);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--accent-gold);
    margin-top: 15px;
}

.page-header p {
    max-width: 700px;
    margin: 20px auto 0;
    color: var(--text-secondary);
}

/* Main Content */
main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Section Intro Grid */
.section-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
    align-items: center;
}

.section-intro h2 {
    font-size: 1.5rem;
    color: var(--accent-light);
    margin-bottom: 15px;
    font-weight: 400;
}

.section-intro p {
    color: #c4b498;
    margin-bottom: 12px;
}

.section-intro img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.4);
    border: 2px solid var(--border-color);
}

/* Frequency Key */
.frequency-key {
    background: rgba(180, 150, 100, 0.1);
    border-left: 3px solid var(--accent-gold);
    padding: 20px 25px;
    margin: 20px 0;
}

.frequency-key h3 {
    color: var(--accent-gold);
    font-size: 1rem;
    margin-bottom: 10px;
}

.frequency-key ul {
    list-style: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.frequency-key li {
    margin-bottom: 5px;
}

.frequency-key li::before {
    content: "D";
    color: var(--accent-gold);
    margin-right: 5px;
}

/* Gallery Header */
.gallery-header {
    text-align: center;
    margin-bottom: 30px;
}

.gallery-header h2 {
    font-size: 1.5rem;
    color: var(--accent-light);
    font-weight: 400;
}

/* Gallery Grid */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.gallery-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.gallery-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    border-color: var(--border-hover);
}

.gallery-item img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
}

.gallery-item .caption {
    padding: 15px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.gallery-item .folio {
    color: var(--accent-gold);
    font-weight: bold;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.95);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 4px;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 2rem;
    color: var(--accent-gold);
    cursor: pointer;
    transition: color 0.3s;
}

.lightbox-close:hover {
    color: var(--accent-light);
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--border-color);
    background: rgba(0,0,0,0.3);
}

footer .credit {
    font-size: 0.9rem;
    color: var(--text-muted);
}

footer .credit a {
    color: var(--accent-gold);
    text-decoration: none;
}

footer .credit a:hover {
    text-decoration: underline;
}

footer .epoch-sig {
    font-size: 1.2rem;
    color: var(--accent-gold);
    margin-top: 15px;
    letter-spacing: 3px;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.95rem;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: rgba(180, 150, 100, 0.1);
    color: var(--accent-gold);
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
}

td {
    color: #c4b498;
}

tr:hover td {
    background: rgba(180, 150, 100, 0.05);
}

/* ============================================
   MOBILE RESPONSIVENESS
   ============================================ */

@media (max-width: 1024px) {
    nav ul {
        gap: 15px;
    }

    nav a {
        font-size: 0.8rem;
        padding: 5px 8px;
    }

    .section-intro {
        gap: 30px;
    }

    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 768px) {
    /* Navigation - Horizontal scroll on small screens */
    nav {
        padding: 10px 0;
    }

    nav ul {
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
        gap: 10px;
        padding: 5px 15px;
        flex-wrap: nowrap;
    }

    nav ul::-webkit-scrollbar {
        display: none;
    }

    nav a {
        font-size: 0.7rem;
        white-space: nowrap;
        padding: 8px 12px;
        background: rgba(180, 150, 100, 0.1);
        border-radius: 15px;
    }

    nav a.active {
        background: rgba(180, 150, 100, 0.25);
        border-bottom: none;
    }

    /* Page Header */
    .page-header {
        padding: 30px 15px 20px;
    }

    .page-header h1 {
        font-size: 1.6rem;
        letter-spacing: 2px;
    }

    .page-header .d-info {
        font-size: 0.8rem;
        padding: 6px 15px;
    }

    .page-header p {
        font-size: 0.95rem;
    }

    /* Main Content */
    main {
        padding: 25px 15px;
    }

    /* Section Intro - Stack on mobile */
    .section-intro {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .section-intro h2 {
        font-size: 1.3rem;
    }

    /* Gallery */
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 15px;
    }

    .gallery-item img {
        height: 250px;
    }

    .gallery-item .caption {
        padding: 12px;
        font-size: 0.85rem;
    }

    /* Lightbox */
    .lightbox img {
        max-width: 95%;
        max-height: 85%;
    }

    .lightbox-close {
        top: 15px;
        right: 20px;
        font-size: 1.5rem;
    }

    /* Tables */
    table {
        font-size: 0.85rem;
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    th, td {
        padding: 10px 12px;
        min-width: 100px;
    }

    /* Footer */
    footer {
        padding: 30px 15px;
    }

    footer .credit {
        font-size: 0.85rem;
    }

    footer .epoch-sig {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    nav a {
        font-size: 0.65rem;
        padding: 6px 10px;
    }

    .page-header h1 {
        font-size: 1.4rem;
    }

    .gallery {
        grid-template-columns: 1fr;
    }

    .gallery-item img {
        height: 280px;
    }

    .section-intro h2 {
        font-size: 1.2rem;
    }

    .frequency-key {
        padding: 15px 18px;
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .gallery-item:hover {
        transform: none;
    }

    .gallery-item:active {
        transform: scale(0.98);
    }

    nav a:active {
        background: rgba(180, 150, 100, 0.3);
    }
}