:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #1f2933;
    --muted: #5f6c7b;
    --accent: #0b7285;
    --accent-2: #0f4c5c;
    --danger: #b02a37;
    --border: #d6dee6;
    --radius: 14px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Source Sans 3", "Segoe UI", sans-serif;
    color: var(--text);
    background: radial-gradient(circle at top right, #d9edf2 0%, #f4f6f8 45%, #eef3f7 100%);
}

.page {
    max-width: 1160px;
    margin: 0 auto;
    padding: 1rem;
}

h1, h2, h3 {
    margin-top: 0;
    font-family: "Merriweather Sans", "Segoe UI", sans-serif;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    box-shadow: 0 10px 30px -24px rgba(15, 37, 56, 0.75);
}

.auth-card {
    max-width: 500px;
    margin: 7vh auto;
}

.stack {
    display: grid;
    gap: 0.7rem;
}

label {
    display: grid;
    gap: 0.35rem;
    font-size: 0.95rem;
}

input,
select,
textarea,
button,
.button {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.62rem 0.72rem;
    font: inherit;
}

button,
.button {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.08s ease, background-color 0.2s ease;
}

button:hover,
.button:hover {
    background: var(--accent-2);
}

button:active,
.button:active {
    transform: scale(0.99);
}

.button.ghost {
    background: transparent;
    color: var(--accent-2);
    border-color: var(--accent-2);
}

.button.danger {
    background: var(--danger);
    border-color: var(--danger);
}

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

.center {
    text-align: center;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.row {
    display: flex;
    align-items: center;
}

.wrap {
    flex-wrap: wrap;
}

.gap-sm {
    gap: 0.5rem;
}

.grid {
    display: grid;
    gap: 1rem;
    margin-bottom: 1rem;
}

.grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.alert {
    border-radius: 10px;
    padding: 0.7rem 0.8rem;
    margin: 0.8rem 0;
}

.alert-error {
    background: #fee2e2;
    border: 1px solid #fecaca;
    color: #9b1c1c;
}

.alert-success {
    background: #dff4e5;
    border: 1px solid #bee8ca;
    color: #205f3d;
}

.filters {
    margin-bottom: 1rem;
}

.item-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.85rem;
}

.item-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
}

.cover-wrap {
    display: block;
    aspect-ratio: 3/4;
    background: linear-gradient(120deg, #edf2f7, #dde6ef);
}

.cover-wrap img,
.detail-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.cover-placeholder {
    height: 100%;
    display: grid;
    place-items: center;
    color: #708090;
}

.item-body {
    padding: 0.75rem;
}

.badge-row {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 0.4rem;
}

.badge {
    font-size: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.14rem 0.5rem;
    text-transform: capitalize;
}

.loan-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.7rem;
    border-bottom: 1px solid var(--border);
    padding: 0.55rem 0;
}

.loan-row:last-child {
    border-bottom: none;
}

.item-detail {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 1rem;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

.table th,
.table td {
    border-bottom: 1px solid var(--border);
    padding: 0.56rem 0.45rem;
    text-align: left;
    vertical-align: top;
}

.invite-list {
    display: grid;
    gap: 0.6rem;
}

.invite-item {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.65rem;
}

@media (max-width: 860px) {
    .grid.two {
        grid-template-columns: 1fr;
    }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .item-detail {
        grid-template-columns: 1fr;
    }

    .table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}