:root {
    color-scheme: light;
    --color-ink: #202124;
    --color-muted: #5f6368;
    --color-border: #d9dde3;
    --color-panel: #ffffff;
    --color-page: #f5f7fb;
    --color-primary: #256f6c;
    --color-primary-strong: #1b5654;
    --color-accent: #b54238;
    --color-success: #2f6f3e;
    --color-warning: #8a5a00;
    --shadow-panel: 0 18px 45px rgba(28, 39, 49, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--color-ink);
    background: var(--color-page);
    font-family: Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.5;
}

a {
    color: inherit;
}

.app-header {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 0 32px;
    border-bottom: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.96);
}

.brand {
    color: var(--color-primary-strong);
    font-weight: 700;
    text-decoration: none;
}

.top-nav {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    color: var(--color-muted);
    font-size: 14px;
}

.top-nav a {
    text-decoration: none;
}

.user-pill {
    max-width: 220px;
    padding: 6px 10px;
    overflow: hidden;
    color: var(--color-ink);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.auth-page {
    background:
        linear-gradient(rgba(245, 247, 251, 0.86), rgba(245, 247, 251, 0.92)),
        url("../images/library-login.svg") center / cover no-repeat;
}

.auth-shell,
.page-shell {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.auth-shell {
    min-height: calc(100vh - 64px);
    display: grid;
    align-items: center;
    padding: 48px 0;
}

.login-panel,
.notice-panel,
.dashboard-hero,
.workspace-card,
.toolbar-panel,
.table-panel,
.form-panel {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-panel);
    box-shadow: var(--shadow-panel);
}

.login-panel {
    width: min(420px, 100%);
    padding: 32px;
}

.eyebrow {
    margin: 0 0 6px;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 18px;
    font-size: 32px;
    line-height: 1.15;
}

h2 {
    margin-bottom: 10px;
    font-size: 20px;
}

.login-form {
    display: grid;
    gap: 10px;
}

.login-form label {
    color: var(--color-muted);
    font-size: 14px;
    font-weight: 700;
}

.login-form input {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font: inherit;
}

.login-form input:focus {
    outline: 3px solid rgba(37, 111, 108, 0.18);
    border-color: var(--color-primary);
}

.button {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    padding: 9px 14px;
    border: 1px solid transparent;
    border-radius: 6px;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.button-primary {
    margin-top: 12px;
    color: #ffffff;
    background: var(--color-primary);
}

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

.button-secondary {
    color: var(--color-primary-strong);
    border-color: rgba(37, 111, 108, 0.35);
    background: #ffffff;
}

.button-danger {
    color: #ffffff;
    background: var(--color-accent);
}

.button-danger:hover {
    background: #8f3028;
}

.message {
    margin-bottom: 16px;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 14px;
}

.message-error {
    color: #7a211a;
    border: 1px solid rgba(181, 66, 56, 0.3);
    background: #fff0ee;
}

.message-success {
    color: #1f572e;
    border: 1px solid rgba(47, 111, 62, 0.3);
    background: #effaf1;
}

.page-shell {
    padding: 36px 0 56px;
}

.dashboard-hero {
    padding: 28px;
    margin-bottom: 24px;
}

.dashboard-hero p:last-child,
.workspace-card p:last-child,
.notice-panel p:last-child {
    margin-bottom: 0;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.workspace-card {
    min-height: 190px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
}

.workspace-card p {
    color: var(--color-muted);
}

.workspace-card .button {
    margin-top: auto;
}

.notice-panel {
    max-width: 680px;
    padding: 28px;
}

.role-actions {
    margin-top: 24px;
}

.catalog-hero {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

.catalog-hero .button {
    margin-top: 0;
}

.toolbar-panel,
.table-panel,
.form-panel {
    padding: 24px;
    margin-bottom: 24px;
}

.search-form {
    display: grid;
    grid-template-columns: repeat(4, minmax(120px, 1fr)) auto auto auto;
    gap: 10px;
    align-items: end;
}

.search-field {
    display: grid;
    gap: 6px;
}

.search-form label {
    color: var(--color-muted);
    font-size: 13px;
    font-weight: 700;
}

.search-form input,
.search-form select,
.book-form input,
.book-form select,
.reader-form input,
.reader-form select {
    width: 100%;
    min-height: 42px;
    padding: 9px 11px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: #ffffff;
    font: inherit;
}

.search-form input:focus,
.search-form select:focus,
.book-form input:focus,
.book-form select:focus,
.reader-form input:focus,
.reader-form select:focus {
    outline: 3px solid rgba(37, 111, 108, 0.18);
    border-color: var(--color-primary);
}

.table-scroll {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table th,
.data-table td {
    padding: 12px 10px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.data-table th {
    color: var(--color-muted);
    font-size: 13px;
    font-weight: 700;
    background: #f8fafc;
}

.empty-state {
    margin-bottom: 0;
    color: var(--color-muted);
}

.status-pill {
    display: inline-flex;
    min-height: 28px;
    align-items: center;
    padding: 4px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.status-available {
    color: var(--color-success);
    background: #edf8ef;
}

.status-unavailable {
    color: var(--color-warning);
    background: #fff7e5;
}

.status-archived {
    color: var(--color-muted);
    background: #eef1f5;
}

.status-active {
    color: var(--color-success);
    background: #edf8ef;
}

.status-suspended {
    color: var(--color-warning);
    background: #fff7e5;
}

.status-inactive {
    color: var(--color-muted);
    background: #eef1f5;
}

.table-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.table-actions form {
    margin: 0;
}

.form-panel {
    max-width: 860px;
}

.book-form,
.reader-form {
    display: grid;
    gap: 20px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.form-field {
    display: grid;
    gap: 6px;
}

.form-field label {
    color: var(--color-muted);
    font-size: 14px;
    font-weight: 700;
}

.field-error {
    color: #7a211a;
    font-size: 13px;
}

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

@media (max-width: 720px) {
    .app-header {
        align-items: flex-start;
        flex-direction: column;
        padding: 16px;
    }

    .top-nav {
        width: 100%;
    }

    h1 {
        font-size: 28px;
    }

    .login-panel,
    .notice-panel,
    .dashboard-hero,
    .workspace-card,
    .toolbar-panel,
    .table-panel,
    .form-panel {
        box-shadow: none;
    }

    .search-form,
    .form-grid {
        grid-template-columns: 1fr;
    }
}