:root {
    --bg: #f1f5f8;
    --sidebar: #23313f;
    --sidebar-strong: #17222e;
    --text: #25303d;
    --muted: #687789;
    --line: #dce3ea;
    --panel: #ffffff;
    --primary: #2082c7;
    --primary-dark: #17679f;
    --success: #12a66a;
    --danger: #d94b45;
    --warning: #f2a526;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    font-family: Arial, "Microsoft JhengHei", "PingFang TC", sans-serif;
    line-height: 1.55;
}

a {
    color: var(--primary);
}

.icon {
    width: 1.15rem;
    height: 1.15rem;
    flex: 0 0 auto;
}

.admin-body {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
}

.admin-sidebar {
    min-height: 100vh;
    background: var(--sidebar);
    color: #fff;
    padding: 22px 16px;
}

.admin-brand {
    padding: 10px 12px 22px;
    font-size: 1.2rem;
    font-weight: 800;
}

.admin-nav {
    display: grid;
    gap: 6px;
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #dce7ef;
    padding: 12px;
    border-radius: 8px;
    text-decoration: none;
}

.admin-nav a:hover {
    background: var(--sidebar-strong);
    color: #fff;
}

.admin-main {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0 52px;
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 22px;
}

.admin-topbar h1 {
    margin: 0;
    font-size: 2rem;
    line-height: 1.2;
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0;
}

.admin-user {
    padding: 8px 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--muted);
}

.panel,
.stat-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 12px 30px rgba(31, 45, 61, 0.06);
}

.panel {
    padding: 22px;
    margin-bottom: 20px;
}

.panel.narrow {
    max-width: 720px;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.panel-head h2 {
    margin: 0;
    font-size: 1.2rem;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.stat-card {
    padding: 18px;
}

.stat-card span {
    display: block;
    color: var(--muted);
    font-size: 0.95rem;
}

.stat-card strong {
    display: block;
    margin-top: 8px;
    font-size: 2rem;
    line-height: 1;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
}

th,
td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    color: #4a596a;
    background: #f6f8fa;
    font-size: 0.92rem;
}

td small,
.muted {
    color: var(--muted);
}

.long-text {
    max-width: 360px;
    overflow-wrap: anywhere;
}

.actions-cell {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.inline-form {
    display: inline;
    margin: 0;
}

.inline-form button {
    border: 0;
    padding: 0;
    color: var(--primary);
    background: transparent;
    font: inherit;
    cursor: pointer;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 0.85rem;
    font-weight: 700;
}

.badge.active {
    color: #0b7048;
    background: #dff8ed;
}

.badge.inactive {
    color: #8f312e;
    background: #fde6e4;
}

.form-grid,
.form-stack {
    display: grid;
    gap: 16px;
}

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

.full-span {
    grid-column: 1 / -1;
}

label span {
    display: block;
    margin-bottom: 7px;
    color: #405065;
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    min-height: 44px;
    border: 1px solid #cfd8e2;
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--text);
    background: #fff;
    font: inherit;
}

textarea {
    resize: vertical;
}

input[type="file"] {
    padding: 9px;
}

label small {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    overflow-wrap: anywhere;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: flex-end;
    margin-top: 6px;
}

.button,
button.button {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 8px;
    padding: 9px 15px;
    border: 1px solid var(--line);
    text-decoration: none;
    font-weight: 800;
    cursor: pointer;
    font: inherit;
}

.button.primary {
    color: #fff;
    background: var(--primary);
    border-color: var(--primary);
}

.button.primary:hover {
    background: var(--primary-dark);
}

.button.secondary {
    color: var(--text);
    background: #fff;
}

.button.small {
    min-height: 36px;
    padding: 7px 12px;
    font-size: 0.92rem;
}

.alert {
    padding: 12px 14px;
    border-radius: 8px;
    margin-bottom: 16px;
    border: 1px solid var(--line);
}

.alert-success {
    color: #0b7048;
    background: #e7fbf1;
    border-color: #c4f0dc;
}

.alert-error {
    color: #8f312e;
    background: #fdebea;
    border-color: #f6c7c4;
}

.filter-form {
    display: flex;
    gap: 8px;
    align-items: center;
}

.filter-form select {
    min-width: 180px;
}

.detail-list {
    display: grid;
    gap: 12px;
}

.detail-list div {
    display: grid;
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 12px;
}

.detail-list span {
    color: var(--muted);
}

.login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background: #edf3f7;
}

.login-panel {
    width: min(100%, 420px);
}

.login-card {
    padding: 28px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 24px 44px rgba(32, 52, 72, 0.12);
}

.login-card h1 {
    margin: 0 0 20px;
    font-size: 1.9rem;
}

@media (max-width: 920px) {
    .admin-body {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        min-height: auto;
    }

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

    .admin-main {
        width: min(100% - 24px, 1180px);
        padding-top: 20px;
    }

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

    .form-grid.two-col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .admin-topbar,
    .panel-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .admin-nav {
        grid-template-columns: 1fr;
    }

    .stat-grid {
        grid-template-columns: 1fr;
    }

    .detail-list div {
        grid-template-columns: 1fr;
        gap: 2px;
    }

    .filter-form {
        width: 100%;
        align-items: stretch;
        flex-direction: column;
    }
}