:root {
    --brand: #5b4636;
    --brand-dark: #3f2f24;
    --accent: #c99a52;
    --bg: #faf7f2;
    --card-bg: #ffffff;
    --border: #e5ddd0;
    --text: #2b2420;
    --muted: #8a7f72;
    --green: #2e7d32;
    --green-bg: #e6f4ea;
    --orange: #b26a00;
    --orange-bg: #fdf0dc;
    --red: #b3261e;
    --radius: 10px;
}

* { box-sizing: border-box; }

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

.topbar {
    background: var(--brand-dark);
    color: #fff;
}
.topbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.brand {
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
}
.topbar nav a {
    color: #f2e9dc;
    text-decoration: none;
    margin-left: 18px;
    font-size: 0.95rem;
}
.topbar nav a:hover { color: var(--accent); }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

h1 { margin-top: 0; }

.flash {
    padding: 10px 16px;
    border-radius: var(--radius);
    margin-bottom: 18px;
    font-size: 0.95rem;
}
.flash.success { background: var(--green-bg); color: var(--green); border: 1px solid #bfe3c6; }
.flash.error { background: #fbe9e7; color: var(--red); border: 1px solid #f2c2bd; }

.stats-row {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 22px;
    min-width: 130px;
    text-align: center;
}
.stat-num { display: block; font-size: 1.6rem; font-weight: 700; color: var(--brand-dark); }
.stat-label { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; }

.filter-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 18px;
    background: var(--card-bg);
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.filter-bar input[type=text],
.filter-bar select {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.9rem;
}
.filter-bar input[type=text] { flex: 1; min-width: 200px; }

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-secondary { background: #efe8dc; color: var(--brand-dark); }
.btn-secondary:hover { background: #e3d9c7; }
.btn-sm { padding: 6px 10px; font-size: 0.82rem; }

.table-wrap {
    overflow-x: auto;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.book-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.book-table th, .book-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.book-table th {
    background: #f3ede2;
    color: var(--brand-dark);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.book-table tr:hover td { background: #fbf8f2; }
.empty-row { text-align: center; color: var(--muted); padding: 24px !important; }

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    text-decoration: none;
    font-weight: 600;
}
.badge-green { background: var(--green-bg); color: var(--green); }
.badge-orange { background: var(--orange-bg); color: var(--orange); }

.actions a { margin-right: 10px; font-size: 0.85rem; text-decoration: none; }
.link-edit { color: var(--brand); }
.link-delete { color: var(--red); }

.book-form, .list-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    max-width: 520px;
}
.book-form label {
    display: block;
    margin-bottom: 14px;
    font-size: 0.88rem;
    color: var(--muted);
}
.book-form input, .book-form select {
    display: block;
    width: 100%;
    margin-top: 5px;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    color: var(--text);
    background: #fff;
}
.form-actions { margin-top: 10px; display: flex; gap: 10px; }

.lists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
}
.list-card h2 { margin-top: 0; font-size: 1.05rem; }
.inline-form { display: flex; gap: 8px; margin-bottom: 10px; }
.inline-form input[type=text] {
    flex: 1;
    padding: 7px 9px;
    border: 1px solid var(--border);
    border-radius: 6px;
}
.edit-list { list-style: none; padding: 0; margin: 0; }
.edit-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    border-top: 1px solid var(--border);
}
.edit-list .inline-form { flex: 1; margin-bottom: 0; }

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

.footer {
    text-align: center;
    color: var(--muted);
    font-size: 0.8rem;
    padding: 20px;
}

@media (max-width: 600px) {
    .topbar-inner { flex-direction: column; align-items: flex-start; }
}