:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg: #f5f5f5;
    --card: #fff;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --success-bg: #ecfdf5; --success-text: #065f46; --success-border: #a7f3d0;
    --error-bg: #fef2f2;   --error-text: #991b1b;   --error-border: #fecaca;
    --radius: 8px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container { max-width: 800px; margin: 0 auto; padding: 0 20px; }

/* ── Nav ─────────────────────────────────── */
nav {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
    margin-bottom: 28px;
}
.nav-inner { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.2rem; font-weight: 700; color: var(--primary); text-decoration: none; }
.nav-right { display: flex; align-items: center; gap: 16px; }
.nav-right a { color: var(--text-light); text-decoration: none; font-size: 0.9rem; }
.nav-right a:hover { color: var(--primary); }
.nav-user { font-weight: 600; font-size: 0.9rem; }

/* ── Card ────────────────────────────────── */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 14px;
}
.card.empty { text-align: center; color: var(--text-light); padding: 32px; }
.center-card { max-width: 400px; margin: 80px auto; text-align: center; }

.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.card-actions { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }

/* ── Typography ──────────────────────────── */
h1 { margin-bottom: 8px; }
h2 { margin-bottom: 14px; margin-top: 8px; font-size: 1.25rem; }
h3 { font-size: 1.1rem; margin-bottom: 4px; }
h4 { font-size: 1rem; margin-bottom: 2px; }
.subtitle { color: var(--text-light); margin-bottom: 20px; }
.desc { color: var(--text-light); font-size: 0.9rem; margin: 4px 0 10px; }
.stats { color: var(--text-light); font-size: 0.88rem; }
small { color: var(--text-light); }
.back-link { color: var(--primary); text-decoration: none; display: inline-block; margin-bottom: 12px; font-size: 0.9rem; }

/* ── Form ────────────────────────────────── */
input, textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    margin-bottom: 10px;
    transition: border-color .2s;
}
input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,.1); }
textarea { resize: vertical; min-height: 100px; }

/* ── Buttons ─────────────────────────────── */
.btn {
    display: inline-block;
    padding: 9px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background .2s;
    line-height: 1.4;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--text-light); color: #fff; }
.btn-secondary:hover { background: #555; }
.btn-sm { padding: 5px 12px; font-size: 0.82rem; }
.full-width { width: 100%; }

/* ── Badges ──────────────────────────────── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 600;
    vertical-align: middle;
}
.badge-done { background: #d1fae5; color: #065f46; }
.badge-empty { background: #f3f4f6; color: var(--text-light); }

/* ── Alert ───────────────────────────────── */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.92rem; }
.alert-success { background: var(--success-bg); color: var(--success-text); border: 1px solid var(--success-border); }
.alert-error { background: var(--error-bg); color: var(--error-text); border: 1px solid var(--error-border); }

/* ── CDK code display ────────────────────── */
.code-row { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.cdk-code {
    flex: 1;
    background: #f3f4f6;
    padding: 10px 14px;
    border-radius: var(--radius);
    font-family: "SF Mono", "Fira Code", "Courier New", monospace;
    font-size: 1rem;
    word-break: break-all;
    user-select: all;
}

/* ── Details / restock ───────────────────── */
details { margin-top: 12px; }
details summary { cursor: pointer; color: var(--primary); font-size: 0.9rem; user-select: none; }
.restock-form { margin-top: 12px; }

/* ── Table ───────────────────────────────── */
.detail-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.detail-table th { text-align: left; color: var(--text-light); font-weight: 600; padding: 8px 10px; border-bottom: 2px solid var(--border); }
.detail-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); }
.detail-table tr:last-child td { border-bottom: none; }
.detail-table code { background: #f3f4f6; padding: 2px 6px; border-radius: 4px; font-size: 0.85rem; }
.tag-claimed { color: #059669; font-weight: 600; }
.tag-unclaimed { color: var(--text-light); }

/* ── Responsive ──────────────────────────── */
@media (max-width: 600px) {
    .card-header { flex-direction: column; }
    .card-actions { align-self: flex-start; }
    .detail-table { font-size: 0.8rem; }
    .detail-table th, .detail-table td { padding: 6px 6px; }
}