/* ========================================
   THE PHYSICAL ARCHIVE
   Main external stylesheet
======================================== */

:root {
    --background: #151817;
    --background-light: #1d2220;
    --panel: #252b28;
    --panel-light: #2d3531;

    --blue: #8da9d6;
    --light-blue: #b6c4e9;
    --ice: #dde9ea;
    --mint: #ccddd1;
    --sage: #8d9b94;
    --green: #48655c;

    --text: #eef3f1;
    --muted-text: #bcc7c2;
    --border: #566761;
    --dark-text: #151817;

    --max-width: 1180px;
}

/* ========================================
   RESET AND BASIC STYLES
======================================== */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background-color: var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.7;
}

img,
video {
    display: block;
    max-width: 100%;
}

a {
    color: var(--light-blue);
}

a:hover {
    color: var(--ice);
}

button,
input,
select,
textarea {
    font: inherit;
}

h1,
h2,
h3 {
    margin-top: 0;
    color: var(--mint);
    font-family: "Courier New", Courier, monospace;
    line-height: 1.25;
    letter-spacing: 1px;
}

p {
    margin-top: 0;
}

ul,
ol {
    padding-left: 1.5rem;
}

li::marker {
    color: var(--blue);
}

/* ========================================
   ACCESSIBILITY
======================================== */

.skip-link {
    position: absolute;
    top: -60px;
    left: 12px;
    z-index: 9999;
    padding: 10px 15px;
    background-color: var(--ice);
    color: var(--dark-text);
    text-decoration: none;
}

.skip-link:focus {
    top: 12px;
}

:focus-visible {
    outline: 3px solid var(--light-blue);
    outline-offset: 3px;
}

/* ========================================
   HEADER AND NAVIGATION
======================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
    background-color: rgba(21, 24, 23, 0.97);
}

.nav-container {
    width: min(var(--max-width), 92%);
    margin: 0 auto;
    padding: 16px 0;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 18px;

    color: var(--ice);
    text-decoration: none;

    font-family: "Courier New", Courier, monospace;
    font-weight: bold;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-line {
    color: var(--ice);
    font-size: 1.8rem;
    letter-spacing: 3px;
}

.logo-image {
    width: 70px;
    height: 70px;
    object-fit: contain;
    align-self: flex-end;
    margin-bottom: 4px;
}

.menu-button {
    display: none;
    padding: 8px 12px;
    border: 1px solid var(--border);
    background-color: var(--panel);
    color: var(--text);
    cursor: pointer;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-links a {
    display: block;
    padding: 8px 10px;
    border: 1px solid transparent;
    color: var(--text);
    font-family: "Courier New", Courier, monospace;
    font-size: 0.78rem;
    letter-spacing: 0.5px;
    text-decoration: none;
    text-transform: uppercase;
}

.nav-links a:hover,
.nav-links a.active {
    border-color: var(--mint);
    background-color: var(--mint);
    color: var(--dark-text);
}

/* ========================================
   SHARED PAGE LAYOUT
======================================== */

.page-wrapper {
    width: min(var(--max-width), 92%);
    margin: 30px auto;
}

.page-banner {
    margin-bottom: 20px;
    padding: 28px;
    border: 1px solid var(--border);
    background-color: var(--panel);
}

.archive-number {
    display: inline-block;
    margin-bottom: 10px;
    padding: 4px 9px;
    background-color: var(--green);
    color: var(--ice);
    font-family: "Courier New", Courier, monospace;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.page-banner h1 {
    margin-bottom: 10px;
    color: var(--ice);
    font-size: clamp(2rem, 5vw, 3.3rem);
}

.page-banner p {
    max-width: 850px;
    margin-bottom: 0;
    color: var(--muted-text);
}

.panel {
    padding: 22px;
    border: 1px solid var(--border);
    background-color: var(--panel);
}

.panel-title {
    margin-bottom: 18px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.section-space {
    margin-bottom: 20px;
}

.two-column {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 20px;
}

.equal-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.three-column {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.info-card {
    padding: 18px;
    border: 1px solid var(--border);
    background-color: var(--background-light);
}

.info-card h3 {
    margin-bottom: 8px;
    color: var(--light-blue);
}

.info-card p:last-child {
    margin-bottom: 0;
}

.muted {
    color: var(--muted-text);
}

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

/* ========================================
   BUTTONS AND LINKS
======================================== */

.button {
    display: inline-block;
    padding: 10px 16px;
    border: 1px solid var(--blue);
    background-color: var(--blue);
    color: var(--dark-text);
    font-family: "Courier New", Courier, monospace;
    font-weight: bold;
    text-decoration: none;
    cursor: pointer;
}

.button:hover {
    background-color: var(--light-blue);
    color: var(--dark-text);
}

.button-secondary {
    background-color: transparent;
    color: var(--light-blue);
}

.button-secondary:hover {
    background-color: var(--panel-light);
    color: var(--ice);
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* ========================================
   HOME PAGE
======================================== */

.hero-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.hero-panel {
    min-height: 360px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.eyebrow {
    margin-bottom: 8px;
    color: var(--blue);
    font-family: "Courier New", Courier, monospace;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-panel h1 {
    margin-bottom: 16px;
    color: var(--ice);
    font-size: clamp(2rem, 5vw, 3.8rem);
}

.hero-panel h1 span {
    color: var(--blue);
}

.hero-panel p {
    color: var(--muted-text);
    font-size: 1.05rem;
}

.featured-image {
    width: 100%;
    min-height: 220px;
    object-fit: cover;
    border: 1px solid var(--border);
    background-color: var(--background-light);
}

.home-reasons {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.reason-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
}

.category-card {
    min-height: 145px;
    padding: 16px;
    border: 1px solid var(--border);
    background-color: var(--background-light);
    text-align: center;

    display: flex;
    flex-direction: column;
    justify-content: center;

    transition:
        transform 0.2s ease,
        border-color 0.2s ease;
}

.category-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue);
}

.category-icon {
    margin-bottom: 8px;
    font-size: 2rem;
    
}


.category-card h3 {
    margin-bottom: 4px;
    color: var(--ice);
    font-size: 0.95rem;
}

.category-card p {
    margin-bottom: 0;
    color: var(--muted-text);
    font-size: 0.82rem;
}

.story-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

.story-content {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 18px;
    align-items: center;
}

.update-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.update-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.update-list li:last-child {
    border-bottom: none;
}

.file-number {
    display: block;
    color: var(--sage);
    font-family: "Courier New", Courier, monospace;
    font-size: 0.8rem;
}

/* ========================================
   HISTORY TIMELINE
======================================== */

.timeline-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.filter-button {
    padding: 8px 14px;
    border: 1px solid var(--border);
    background-color: var(--background-light);
    color: var(--text);
    cursor: pointer;
}

.filter-button:hover,
.filter-button.active {
    border-color: var(--blue);
    background-color: var(--blue);
    color: var(--dark-text);
}

.timeline-list {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    overflow-x: auto;
    padding: 10px 2px 16px;
}

.timeline-button {
    min-width: 120px;
    padding: 12px;
    border: 1px solid var(--border);
    background-color: var(--background-light);
    color: var(--text);
    cursor: pointer;
}

.timeline-button:hover,
.timeline-button.active {
    border-color: var(--mint);
    background-color: var(--mint);
    color: var(--dark-text);
}

.timeline-button span {
    display: block;
}

.timeline-year {
    font-family: "Courier New", Courier, monospace;
    font-weight: bold;
}

.timeline-name {
    margin-top: 4px;
    font-size: 0.8rem;
}

.timeline-display {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 22px;
    align-items: center;
}

.timeline-display.fade {
    animation: timelineFade 0.35s ease;
}

.timeline-image {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border: 1px solid var(--border);
    background-color: var(--background-light);
}

.timeline-navigation {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-top: 20px;
}

@keyframes timelineFade {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

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

/* ========================================
   ARCHIVE AND CASE FILES
======================================== */

.archive-file {
    margin-bottom: 20px;
    padding: 22px;
    border: 1px solid var(--border);
    background-color: var(--panel);
}

.archive-file:last-child {
    margin-bottom: 0;
}

.archive-file-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.archive-file-header h2 {
    margin-bottom: 0;
}

.case-label {
    color: var(--blue);
    font-family: "Courier New", Courier, monospace;
    font-size: 0.8rem;
    white-space: nowrap;
}

.case-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 20px;
    align-items: center;
}

.case-image {
    width: 100%;
    max-height: 360px;
    object-fit: cover;
    border: 1px solid var(--border);
}

/* ========================================
   COMPARISON TABLE
======================================== */

.table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table caption {
    margin-bottom: 12px;
    color: var(--muted-text);
    text-align: left;
}

.comparison-table th,
.comparison-table td {
    padding: 14px;
    border: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.comparison-table th {
    background-color: var(--green);
    color: var(--ice);
}

.comparison-table tr:nth-child(even) {
    background-color: var(--background-light);
}

/* ========================================
   PRESERVATION PAGE
======================================== */

.preservation-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.storage-list dt {
    margin-top: 14px;
    color: var(--light-blue);
    font-family: "Courier New", Courier, monospace;
    font-weight: bold;
}

.storage-list dd {
    margin-left: 0;
    color: var(--muted-text);
}

.media-video {
    width: 100%;
    border: 1px solid var(--border);
}

/* ========================================
   COLLECTORS GALLERY
======================================== */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.gallery-card {
    border: 1px solid var(--border);
    background-color: var(--background-light);
}

.gallery-card a {
    text-decoration: none;
}

.gallery-card img {
    width: 100%;
    height: 230px;
    object-fit: cover;
}

.gallery-card-content {
    padding: 16px;
}

.gallery-card h2,
.gallery-card h3 {
    color: var(--light-blue);
}

.gallery-card p {
    margin-bottom: 0;
    color: var(--muted-text);
}

.gallery-card:hover {
    border-color: var(--blue);
}

/* ========================================
   FUTURE PAGE
======================================== */

.future-meter {
    height: 12px;
    margin: 8px 0 14px;
    border: 1px solid var(--border);
    background-color: var(--background);
}

.future-meter span {
    display: block;
    height: 100%;
    background-color: var(--blue);
}

/* ========================================
   FAQ ACCORDION
======================================== */

.faq-item {
    margin-bottom: 12px;
    border: 1px solid var(--border);
    background-color: var(--background-light);
}

.faq-question {
    width: 100%;
    padding: 16px;
    border: 0;
    background-color: transparent;
    color: var(--ice);
    font-family: "Courier New", Courier, monospace;
    font-weight: bold;
    text-align: left;
    cursor: pointer;

    display: flex;
    justify-content: space-between;
    gap: 15px;
}

.faq-question:hover {
    background-color: var(--panel-light);
}

.faq-answer {
    display: none;
    padding: 0 16px 16px;
    color: var(--muted-text);
}

.faq-item.open .faq-answer {
    display: block;
}

.faq-symbol {
    color: var(--blue);
}

/* ========================================
   FORM
======================================== */

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label,
.form-label {
    display: block;
    margin-bottom: 6px;
    color: var(--mint);
    font-family: "Courier New", Courier, monospace;
    font-weight: bold;
}

input[type="text"],
input[type="email"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 11px;
    border: 1px solid var(--border);
    background-color: var(--background-light);
    color: var(--text);
}

textarea {
    min-height: 140px;
    resize: vertical;
}

.option-group {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.option-group label {
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    font-weight: normal;
}

.form-message {
    margin-top: 16px;
    color: var(--mint);
    font-weight: bold;
}

/* ========================================
   SITE MAP
======================================== */

.sitemap-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.sitemap-list a {
    display: block;
    padding: 15px;
    border: 1px solid var(--border);
    background-color: var(--background-light);
    text-decoration: none;
}

.sitemap-list a:hover {
    border-color: var(--blue);
    background-color: var(--panel-light);
}

/* ========================================
   FOOTER
======================================== */

.site-footer {
    margin-top: 40px;
    padding: 28px 20px;
    border-top: 1px solid var(--border);
    background-color: var(--background-light);
    text-align: center;
}

.site-footer p {
    margin: 5px 0;
    color: var(--muted-text);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-top: 10px;
}

/* ========================================
   RESPONSIVE STYLES
======================================== */

@media screen and (max-width: 1000px) {
    .nav-container {
        flex-wrap: wrap;
    }

    .menu-button {
        display: block;
        margin-left: auto;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        text-align: center;
    }

    .hero-grid,
    .home-reasons,
    .story-grid,
    .two-column,
    .case-content,
    .timeline-display {
        grid-template-columns: 1fr;
    }

    .category-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .card-grid,
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .timeline-image {
        height: 280px;
    }
}

@media screen and (max-width: 700px) {
    .page-wrapper {
        width: 94%;
        margin-top: 20px;
    }

    .panel,
    .page-banner,
    .archive-file {
        padding: 18px;
    }

    .reason-grid,
    .equal-columns,
    .three-column,
    .preservation-list,
    .form-grid,
    .sitemap-list,
    .story-content {
        grid-template-columns: 1fr;
    }

    .form-group.full-width {
        grid-column: auto;
    }

    .category-grid,
    .card-grid,
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .archive-file-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .timeline-list {
        flex-direction: column;
        overflow: visible;
    }

    .timeline-button {
        width: 100%;
        text-align: left;
    }

    .timeline-navigation {
        flex-direction: column;
    }

    .timeline-navigation button {
        width: 100%;
    }
}

@media screen and (max-width: 480px) {
    .category-grid,
    .card-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .button-row {
        flex-direction: column;
    }

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

    .option-group {
        flex-direction: column;
    }
}