:root {
    --bg: #fdf6f0;
    --card-bg: #ffffff;
    --text: #3a3a3a;
    --muted: #8a8a8a;
    --accent: #7bb8a8;
    --accent-dark: #5a9c8b;
    --taken: #d8d8d8;
    --danger: #c0554a;
    --radius: 16px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.page {
    max-width: 720px;
    margin: 0 auto;
    padding: 24px 16px 64px;
}

header.hero {
    text-align: center;
    margin-bottom: 28px;
}

header.hero h1 {
    font-size: 1.7rem;
    margin: 0 0 6px;
}

header.hero p {
    margin: 0;
    color: var(--muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 14px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
}

.card .thumb {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    background: #eee;
}

.card .thumb.thumb-clickable {
    cursor: pointer;
}

.photo-lightbox-img {
    max-width: 92vw;
    max-height: 88vh;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.card .thumb.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
}

.card .info {
    padding: 10px 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex-grow: 1;
}

.card .marca {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
}

.card .nombre {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.25;
}

.card button.elegir {
    margin-top: auto;
    border: none;
    background: var(--accent);
    color: #fff;
    padding: 10px 8px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
}

.card button.elegir:active { background: var(--accent-dark); }

.card.tomado { opacity: 0.55; }

.card .estado-tomado {
    margin-top: auto;
    text-align: center;
    padding: 10px 8px;
    border-radius: 10px;
    background: var(--taken);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--muted);
}

.empty-msg {
    text-align: center;
    color: var(--muted);
    padding: 40px 0;
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
    z-index: 50;
}

.modal-overlay.open { display: flex; }

.modal-box {
    background: #fff;
    border-radius: var(--radius);
    padding: 22px;
    width: 100%;
    max-width: 360px;
}

.modal-box h2 {
    margin: 0 0 4px;
    font-size: 1.1rem;
}

.modal-box p.muted {
    color: var(--muted);
    font-size: 0.85rem;
    margin: 0 0 14px;
}

.modal-box input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 1rem;
    margin-bottom: 14px;
}

.modal-actions {
    display: flex;
    gap: 10px;
}

.modal-actions button {
    flex: 1;
    padding: 10px;
    border-radius: 10px;
    border: none;
    font-weight: 600;
    cursor: pointer;
}

.modal-actions .confirmar { background: var(--accent); color: #fff; }
.modal-actions .cancelar { background: #eee; color: var(--text); }

.error-msg { color: var(--danger); font-size: 0.85rem; margin: -6px 0 12px; }

/* --- Admin --- */
.admin-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.btn {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    padding: 9px 14px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
}

.btn.secondary { background: #eee; color: var(--text); }
.btn.danger { background: var(--danger); }

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
}

.admin-table th, .admin-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid #eee;
    font-size: 0.9rem;
    vertical-align: middle;
}

.admin-table img.thumb-sm {
    width: 46px;
    height: 46px;
    object-fit: cover;
    border-radius: 8px;
}

.admin-table .acciones { display: flex; gap: 6px; flex-wrap: wrap; }
.admin-table .acciones a, .admin-table .acciones button { font-size: 0.78rem; padding: 6px 10px; }

.badge-tomado { color: var(--accent-dark); font-weight: 600; }
.badge-libre { color: var(--muted); }

.form-box {
    background: #fff;
    border-radius: var(--radius);
    padding: 20px;
    max-width: 420px;
}

.form-box label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin: 14px 0 6px;
}

.form-box input[type="text"], .form-box input[type="password"], .form-box input[type="file"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 1rem;
}

.preview-actual {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 10px;
    margin-top: 8px;
}

.photo-buttons {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.photo-btn {
    flex: 1;
    text-align: center;
    cursor: pointer;
}

.hidden-file-input {
    display: none;
}

.flash-ok {
    background: #e4f4ef;
    color: var(--accent-dark);
    padding: 10px 14px;
    border-radius: 10px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}