:root {
    --paper: #EDE8DC;
    --paper-deep: #E2DCCC;
    --ink: #1F1B16;
    --ink-soft: #5B5347;
    --grease-red: #B3391D;
    --darkroom-green: #5C6E4F;
    --frame-line: #C9C0AE;
    --frame-line-strong: #A79C86;

    --font-display: "Oswald", sans-serif;
    --font-body: "Inter", sans-serif;
    --font-mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
}

@media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- Masthead ---------- */

.masthead {
    border-bottom: 3px solid var(--ink);
    padding: 2rem 1.5rem 1.75rem;
}

.masthead-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.frame-tick {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--darkroom-green);
    flex-shrink: 0;
    box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px var(--ink);
}

.masthead h1 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.6rem, 4vw, 2.3rem);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    margin: 0;
}

.subtitle {
    margin: 0.35rem 0 0;
    color: var(--ink-soft);
    font-size: 0.95rem;
}

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem 3rem;
}

.loading-msg, .empty-msg {
    font-family: var(--font-mono);
    color: var(--ink-soft);
    text-align: center;
    padding: 3rem 1rem;
}

/* ---------- Trip list (one per line) ---------- */

.trip-list {
    margin-top: 1.5rem;
    border-top: 1px solid var(--frame-line-strong);
}

.trip-row {
    width: 100%;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 0.5rem;
    border-bottom: 1px solid var(--frame-line-strong);
    background: none;
    border-left: none;
    border-right: none;
    border-top: none;
    text-align: left;
    cursor: pointer;
    font-family: var(--font-body);
    color: var(--ink);
}

.trip-row:hover { background: var(--paper-deep); }
.trip-row:focus-visible { outline: 3px solid var(--darkroom-green); outline-offset: -3px; }

.trip-name {
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
}

.trip-count {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--ink-soft);
    white-space: nowrap;
}

/* ---------- Toolbar ---------- */

.toolbar {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem 0;
}

.btn-back {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    font-size: 0.85rem;
    padding: 0.5rem 0.9rem;
    border: 2px solid var(--ink);
    background: var(--paper);
    color: var(--ink);
    cursor: pointer;
}
.btn-back:hover { background: var(--ink); color: var(--paper); }
.btn-back:focus-visible { outline: 3px solid var(--darkroom-green); outline-offset: 2px; }

/* ---------- Photo grid ---------- */

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1px;
    background: var(--frame-line-strong);
    border: 1px solid var(--frame-line-strong);
    margin-top: 1.25rem;
}

.photo-card {
    background: var(--paper);
    display: flex;
    flex-direction: column;
}

.photo-thumb {
    height: 200px;
    background: var(--ink);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-thumb img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    cursor: zoom-in;
}

.photo-caption {
    padding: 0.5rem 0.7rem;
    font-family: var(--font-body);
    font-size: 0.82rem;
    color: var(--ink-soft);
    line-height: 1.4;
}

/* ---------- Lightbox ---------- */

.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(15, 13, 10, 0.94);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}
.lightbox[hidden] { display: none; }

.lightbox img {
    max-width: 92vw;
    max-height: 88vh;
    object-fit: contain;
    border: 3px solid var(--paper);
}

.lightbox-caption {
    position: absolute;
    bottom: 1.25rem;
    left: 0;
    right: 0;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--paper);
    padding: 0 2rem;
}

.lightbox-close {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    background: var(--paper);
    border: 2px solid var(--paper);
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 1.1rem;
    width: 2.5rem;
    height: 2.5rem;
    cursor: pointer;
    line-height: 1;
}
.lightbox-close:hover { background: var(--grease-red); color: var(--paper); border-color: var(--grease-red); }