/*
 * BRTI-MTSS design system.
 *
 * Tokens come from the Claude Design handoff (MTSS App.dc.html): light blue from the logo as the
 * background accent, deep violet as the selection colour, white content area. Every colour is a
 * custom property so the dark theme and high-contrast mode (Account Settings → Preferences) only
 * have to redefine tokens, never component rules.
 */

:root {
    --font-display: 'Manrope', system-ui, sans-serif;
    --font-body: 'Source Sans 3', system-ui, sans-serif;

    --accent: oklch(38% 0.14 286);
    --accent-hover: oklch(30% 0.14 286);
    --on-accent: #ffffff;
    --accent-soft: oklch(95% 0.025 222);
    --accent-wash: oklch(97% 0.015 222);
    --sidebar-tint: oklch(95% 0.025 222);
    --sidebar-border: oklch(88% 0.04 222);
    --titlebar-bg: #ffffff;
    --titlebar-border: oklch(91% 0.008 270);
    --page-pill: oklch(95% 0.025 222);

    --bg-app: oklch(99% 0.002 90);
    --surface: #ffffff;
    --surface-sunken: oklch(98% 0.006 222);
    --surface-muted: oklch(97% 0.008 270);
    --hover: oklch(97% 0.01 222);

    --text: oklch(24% 0.015 275);
    --text-muted: oklch(48% 0.015 270);
    --text-faint: oklch(60% 0.01 270);
    --text-disabled: oklch(70% 0.01 270);

    --border: oklch(91% 0.008 270);
    --border-soft: oklch(95% 0.005 270);
    --border-faint: oklch(93% 0.006 270);
    --border-accent: oklch(88% 0.04 222);

    --success: oklch(52% 0.13 150);
    --success-strong: oklch(60% 0.13 150);
    --success-soft: oklch(95% 0.03 150);
    --warning: oklch(62% 0.14 70);
    --warning-strong: oklch(72% 0.14 70);
    --warning-soft: oklch(95% 0.035 70);
    --danger: oklch(55% 0.19 355);
    --danger-soft: oklch(95% 0.03 355);
    --danger-border: oklch(88% 0.06 355);
    --info: oklch(55% 0.09 222);
    --risk: oklch(58% 0.14 60);
    --risk-soft: oklch(96% 0.03 70);
    --risk-border: oklch(90% 0.05 70);

    --scope-district: oklch(42% 0.15 300);
    --scope-district-soft: oklch(94% 0.03 286);
    --scope-school: oklch(42% 0.09 230);
    --scope-school-soft: oklch(95% 0.025 222);
    --scope-platform: oklch(45% 0.09 250);
    --scope-platform-soft: oklch(95% 0.02 250);

    --tier1: oklch(52% 0.13 150);
    --tier1-bar: oklch(60% 0.13 150);
    --tier1-soft: oklch(95% 0.03 150);
    --tier2: oklch(62% 0.14 70);
    --tier2-bar: oklch(72% 0.14 70);
    --tier2-soft: oklch(95% 0.035 70);
    --tier3: oklch(55% 0.19 355);
    --tier3-bar: oklch(55% 0.19 355);
    --tier3-soft: oklch(95% 0.03 355);

    --avatar-1: oklch(48% 0.13 300);
    --avatar-2: oklch(45% 0.11 250);
    --avatar-3: oklch(46% 0.09 200);
    --avatar-4: oklch(44% 0.1 160);

    --toggle-off: oklch(88% 0.01 270);
    --scrim: oklch(24% 0.015 275 / 0.42);
    --shadow-modal: 0 18px 48px oklch(24% 0.015 275 / 0.25);
    --scrollbar: oklch(88% 0.01 270);

    --titlebar-height: 64px;
    --sidebar-width: 236px;
    --notif-width: 320px;

    color-scheme: light;
}

/* Dark theme: applied for "Dark", and for "System Default" when the OS prefers dark. */
:root[data-theme="dark"] {
    --accent: oklch(74% 0.12 286);
    --accent-hover: oklch(80% 0.1 286);
    --on-accent: oklch(18% 0.03 286);
    --accent-soft: oklch(30% 0.04 240);
    --accent-wash: oklch(26% 0.03 240);
    --sidebar-tint: oklch(21% 0.02 240);
    --sidebar-border: oklch(30% 0.03 240);
    --titlebar-bg: oklch(20% 0.012 275);
    --titlebar-border: oklch(32% 0.012 270);
    --page-pill: oklch(30% 0.04 240);

    --bg-app: oklch(17% 0.01 275);
    --surface: oklch(20% 0.012 275);
    --surface-sunken: oklch(23% 0.015 240);
    --surface-muted: oklch(25% 0.012 270);
    --hover: oklch(25% 0.02 240);

    --text: oklch(94% 0.006 270);
    --text-muted: oklch(74% 0.012 270);
    --text-faint: oklch(64% 0.01 270);
    --text-disabled: oklch(50% 0.01 270);

    --border: oklch(32% 0.012 270);
    --border-soft: oklch(27% 0.01 270);
    --border-faint: oklch(29% 0.01 270);
    --border-accent: oklch(40% 0.04 240);

    --success: oklch(74% 0.13 150);
    --success-soft: oklch(30% 0.05 150);
    --warning: oklch(78% 0.13 70);
    --warning-soft: oklch(32% 0.05 70);
    --danger: oklch(72% 0.15 355);
    --danger-soft: oklch(30% 0.06 355);
    --danger-border: oklch(42% 0.08 355);
    --info: oklch(74% 0.09 222);
    --risk: oklch(80% 0.12 70);
    --risk-soft: oklch(30% 0.05 70);
    --risk-border: oklch(42% 0.06 70);

    --scope-district: oklch(82% 0.1 300);
    --scope-district-soft: oklch(32% 0.06 300);
    --scope-school: oklch(82% 0.07 230);
    --scope-school-soft: oklch(30% 0.04 230);
    --scope-platform: oklch(82% 0.07 250);
    --scope-platform-soft: oklch(30% 0.04 250);

    --tier1: oklch(78% 0.13 150);
    --tier1-soft: oklch(30% 0.05 150);
    --tier2: oklch(80% 0.13 70);
    --tier2-soft: oklch(32% 0.05 70);
    --tier3: oklch(74% 0.15 355);
    --tier3-soft: oklch(30% 0.06 355);

    --toggle-off: oklch(36% 0.01 270);
    --scrim: oklch(5% 0.01 275 / 0.6);
    --shadow-modal: 0 18px 48px oklch(0% 0 0 / 0.5);
    --scrollbar: oklch(36% 0.01 270);

    color-scheme: dark;
}

/*
 * Platform Administration section (/platform). The title bar and sidebar take a warm peach — the
 * complement of the district app's logo blue — so it is unmistakable which side of the site you
 * are on. Only these background tokens change; content and components stay identical.
 */
.shell--platform {
    --sidebar-tint: oklch(95% 0.04 60);
    --sidebar-border: oklch(87% 0.06 60);
    --titlebar-bg: oklch(96.5% 0.03 60);
    --titlebar-border: oklch(87% 0.06 60);
    --page-pill: oklch(91% 0.06 60);
    --modebar-bg: oklch(92% 0.05 60);
}

:root[data-theme="dark"] .shell--platform {
    --sidebar-tint: oklch(23% 0.035 60);
    --sidebar-border: oklch(34% 0.05 60);
    --titlebar-bg: oklch(21% 0.03 60);
    --titlebar-border: oklch(34% 0.05 60);
    --page-pill: oklch(32% 0.06 60);
    --modebar-bg: oklch(26% 0.045 60);
}

/*
 * District Administration section (/district). A soft green, distinct from both the district app's
 * blue and the platform section's peach, so a district manager always knows they are changing
 * district-wide settings. As with the platform section, only background tokens change.
 */
.shell--district {
    --sidebar-tint: oklch(95.5% 0.035 155);
    --sidebar-border: oklch(87% 0.05 155);
    --titlebar-bg: oklch(97% 0.025 155);
    --titlebar-border: oklch(87% 0.05 155);
    --page-pill: oklch(91.5% 0.05 155);
    --modebar-bg: oklch(92.5% 0.045 155);
}

:root[data-theme="dark"] .shell--district {
    --sidebar-tint: oklch(23% 0.03 155);
    --sidebar-border: oklch(34% 0.045 155);
    --titlebar-bg: oklch(21% 0.025 155);
    --titlebar-border: oklch(34% 0.045 155);
    --page-pill: oklch(32% 0.05 155);
    --modebar-bg: oklch(26% 0.04 155);
}

/* High contrast: stronger text and borders on whichever theme is active. */
:root[data-contrast="high"] {
    --text-muted: var(--text);
    --text-faint: var(--text);
    --border: color-mix(in oklch, var(--text) 55%, transparent);
    --border-soft: color-mix(in oklch, var(--text) 35%, transparent);
    --border-faint: color-mix(in oklch, var(--text) 35%, transparent);
    --border-accent: var(--accent);
}

:root[data-font-size="large"] .shell {
    zoom: 1.125;
}

:root[data-motion="reduced"] *,
:root[data-motion="reduced"] *::before,
:root[data-motion="reduced"] *::after {
    transition: none !important;
    animation: none !important;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }
}

/* ------------------------------------------------------------------ base */

* { box-sizing: border-box; }

html, body {
    margin: 0;
    height: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.4;
    color: var(--text);
    background: var(--bg-app);
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    margin: 0;
}

h1:focus { outline: none; }

a { color: var(--accent); }
a:hover { color: var(--accent-hover); }

button, input, select, textarea { font: inherit; color: inherit; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 6px; }
::-webkit-scrollbar-track { background: transparent; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ----------------------------------------------------------------- shell */

.shell {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    width: 100%;
    overflow: hidden;
    background: var(--bg-app);
}

.titlebar {
    flex-shrink: 0;
    height: var(--titlebar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 20px;
    background: var(--titlebar-bg);
    border-bottom: 1px solid var(--titlebar-border);
    position: relative;
    z-index: 20;
}

.titlebar__start {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 220px;
}

.titlebar__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: inherit;
}

.titlebar__brand:hover { color: inherit; }

.titlebar__logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: 6px;
}

.titlebar__wordmark {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.titlebar__name {
    font: 800 16px var(--font-display);
    letter-spacing: 0.2px;
    white-space: nowrap;
}

.titlebar__tagline {
    font: 500 10.5px var(--font-body);
    color: var(--text-muted);
    letter-spacing: 0.3px;
}

.titlebar__center {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    pointer-events: none;
}

.titlebar__page {
    font: 600 14px var(--font-display);
    color: var(--accent);
    padding: 6px 16px;
    background: var(--page-pill);
    border-radius: 100px;
    white-space: nowrap;
}

.titlebar__section {
    font: 800 11px var(--font-display);
    letter-spacing: 0.6px;
    text-transform: uppercase;
    color: var(--accent);
    padding: 5px 11px;
    border-radius: 100px;
    border: 1.5px solid var(--accent);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.titlebar__actions {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 220px;
    justify-content: flex-end;
}

.titlebar__divider {
    width: 1px;
    height: 26px;
    background: var(--border);
}

.titlebar__user {
    display: flex;
    align-items: center;
    gap: 9px;
    text-decoration: none;
    color: inherit;
}

.titlebar__user:hover { color: inherit; }

.titlebar__user-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.titlebar__user-name {
    font: 600 12.5px var(--font-display);
}

.titlebar__user-role {
    font: 400 10.5px var(--font-body);
    color: var(--text-muted);
}

.icon-button {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    flex-shrink: 0;
}

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

.icon-button__count {
    position: absolute;
    top: -3px;
    right: -3px;
    min-width: 16px;
    height: 16px;
    padding: 0 3px;
    border-radius: 100px;
    background: var(--danger);
    color: #fff;
    font: 700 9.5px var(--font-display);
    display: flex;
    align-items: center;
    justify-content: center;
}

.titlebar__menu { display: none; }

/* Section switcher strip below the title bar — platform administrators and district managers. */
.modebar {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 14px;
    padding: 7px 20px;
    background: var(--modebar-bg, var(--accent-wash));
    border-bottom: 1px solid var(--titlebar-border);
    font: 500 12.5px var(--font-body);
    color: var(--text-muted);
}

.modebar__text strong { color: var(--text); font-weight: 700; }

.modebar__enter {
    border-color: var(--accent);
    color: var(--accent);
}

.modebar__enter:hover { color: var(--accent); }

.shell__body {
    flex: 1;
    display: flex;
    min-height: 0;
    position: relative;
}

/* --------------------------------------------------------------- sidebar */

.sidebar {
    flex-shrink: 0;
    width: var(--sidebar-width);
    border-right: 1px solid var(--sidebar-border);
    padding: 18px 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    background: var(--sidebar-tint);
    overflow-y: auto;
}

.sidebar__heading {
    font: 700 10.5px var(--font-display);
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 6px 10px 10px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 12px;
    border-radius: 10px;
    cursor: pointer;
    color: var(--text);
    text-decoration: none;
    font: 600 13.5px var(--font-display);
}

.nav-item:hover {
    color: var(--text);
    background: color-mix(in oklch, var(--accent) 8%, transparent);
}

.nav-item.active,
.nav-item.active:hover {
    background: var(--accent);
    color: var(--on-accent);
}

.nav-item svg { flex-shrink: 0; }

.sidebar__footer {
    margin-top: auto;
    padding: 12px 10px;
    border-top: 1px solid var(--sidebar-border);
    font: 400 11px var(--font-body);
    color: var(--text-muted);
}

.sidebar-scrim { display: none; }

/* --------------------------------------------------------------- content */

.content {
    flex: 1;
    min-width: 0;
    overflow-y: auto;
    background: var(--surface);
    padding: 32px 36px;
}

/* ---------------------------------------------------- notification panel */

.notif-panel {
    flex-shrink: 0;
    overflow: hidden;
    transition: width 0.22s ease;
    border-left: 1px solid var(--border);
    width: 0;
    background: var(--surface);
}

.notif-panel.open { width: var(--notif-width); }

.notif-panel:not(.open) { border-left-color: transparent; }

.notif-panel__inner {
    width: var(--notif-width);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.notif-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border);
}

.notif-panel__header h2 { font: 700 15px var(--font-display); }

.notif-panel__list {
    flex: 1;
    overflow-y: auto;
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.notif {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 13px 14px;
}

.notif__head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 5px;
}

.notif__dot {
    width: 7px;
    height: 7px;
    border-radius: 100px;
    background: var(--info);
    flex-shrink: 0;
}

.notif__title {
    font: 700 12.5px var(--font-display);
    flex: 1;
}

.notif__body {
    font: 400 12px var(--font-body);
    color: var(--text-muted);
    margin: 0 0 6px;
}

.notif__time {
    font: 500 10.5px var(--font-body);
    color: var(--text-faint);
}

.notif__link {
    font: 600 11.5px var(--font-body);
    margin-left: 10px;
}

.dismiss {
    cursor: pointer;
    font: 600 16px/1 sans-serif;
    color: var(--text-muted);
    background: none;
    border: 0;
    padding: 2px 4px;
    border-radius: 6px;
}

.dismiss:hover { background: var(--hover); }

.notif-panel__empty {
    font: 400 13px var(--font-body);
    color: var(--text-muted);
    text-align: center;
    margin-top: 30px;
}

/* ---------------------------------------------------------- page chrome */

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
}

.page-title {
    font: 800 24px var(--font-display);
    margin: 0 0 4px;
}

.page-subtitle {
    font: 400 14px var(--font-body);
    color: var(--text-muted);
    margin: 0;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 6px;
}

.eyebrow__label {
    font: 700 10.5px var(--font-display);
    letter-spacing: 0.7px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.back-link {
    display: inline-block;
    font: 600 12.5px var(--font-body);
    color: var(--accent);
    text-decoration: none;
    cursor: pointer;
    background: none;
    border: 0;
    padding: 0;
}

.section-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font: 700 11px var(--font-display);
    letter-spacing: 0.7px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.section-label::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border-soft);
}

.muted { color: var(--text-muted); }
.small { font-size: 11.5px; }
.stack { display: flex; flex-direction: column; gap: 20px; }
.stack-sm { display: flex; flex-direction: column; gap: 12px; }
.stack-xs { display: flex; flex-direction: column; gap: 8px; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.spacer { flex: 1; }

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.grid-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

/* ----------------------------------------------------------------- cards */

.card {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    background: var(--surface);
}

.card--roomy { padding: 22px; }
.card--flush { padding: 0; overflow: hidden; }

.card__title {
    font: 700 15px var(--font-display);
    margin: 0 0 14px;
}

.card__title--sm { font-size: 14px; }

.card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.card__head .card__title { margin: 0; }

.card__note {
    font: 400 12px var(--font-body);
    color: var(--text-muted);
    margin: -8px 0 14px;
}

.stat__label {
    font: 600 12px var(--font-body);
    color: var(--text-muted);
}

.stat__value {
    font: 800 28px var(--font-display);
    margin-top: 6px;
}

.stat__meta {
    font: 600 11.5px var(--font-body);
    color: var(--text-muted);
}

.stat__meta--good { color: var(--success-strong); }
.stat__meta--warn { color: var(--warning-strong); }

.kv {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font: 500 13px var(--font-body);
}

.kv__row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.kv__row > :first-child { color: var(--text-muted); }
.kv__row > :last-child { text-align: right; overflow-wrap: anywhere; }

.callout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 16px;
    border-radius: 11px;
    background: var(--accent-soft);
    font: 600 12.5px var(--font-body);
}

.callout--warn {
    background: var(--risk-soft);
    border: 1px solid var(--risk-border);
    color: var(--risk);
}

.callout--danger {
    background: var(--danger-soft);
    border: 1px solid var(--danger-border);
    color: var(--danger);
}

.callout--success {
    background: var(--success-soft);
    color: var(--success);
}

.empty {
    font: 400 13px var(--font-body);
    color: var(--text-muted);
    margin: 26px 0 0;
}

.empty--center {
    text-align: center;
    padding: 34px 0;
    margin: 0;
}

/* ---------------------------------------------------------------- badges */

.badge {
    display: inline-flex;
    align-items: center;
    font: 700 10.5px var(--font-display);
    padding: 3px 9px;
    border-radius: 100px;
    white-space: nowrap;
    background: var(--surface-muted);
    color: var(--text-muted);
    height: fit-content;
    flex-shrink: 0;
}

.badge--sm {
    font-size: 9.5px;
    letter-spacing: 0.4px;
    padding: 2px 8px;
}

.badge--xs {
    font-size: 9px;
    letter-spacing: 0.4px;
    padding: 2px 7px;
}

.badge--accent { background: var(--accent-soft); color: var(--accent); }
.badge--success { background: var(--success-soft); color: var(--success); }
.badge--warning { background: var(--warning-soft); color: var(--warning); }
.badge--danger { background: var(--danger-soft); color: var(--danger); }
.badge--risk { background: var(--risk-soft); color: var(--risk); }
.badge--district { background: var(--scope-district-soft); color: var(--scope-district); }
.badge--school { background: var(--scope-school-soft); color: var(--scope-school); }
.badge--platform { background: var(--scope-platform-soft); color: var(--scope-platform); }
.badge--tier1 { background: var(--tier1-soft); color: var(--tier1); }
.badge--tier2 { background: var(--tier2-soft); color: var(--tier2); }
.badge--tier3 { background: var(--tier3-soft); color: var(--tier3); }

.chip {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font: 600 11.5px var(--font-body);
    padding: 6px 12px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: var(--surface);
}

/* --------------------------------------------------------------- avatars */

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 100px;
    background: var(--accent);
    color: var(--on-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font: 700 12.5px var(--font-display);
    flex-shrink: 0;
}

.avatar--soft { background: var(--accent-soft); color: var(--accent); }
.avatar--28 { width: 28px; height: 28px; font-size: 10.5px; }
.avatar--36 { width: 36px; height: 36px; font-size: 12px; }
.avatar--40 { width: 40px; height: 40px; font-size: 13px; }
.avatar--52 { width: 52px; height: 52px; font-size: 16px; }
.avatar--56 { width: 56px; height: 56px; font-size: 17px; }
.avatar--c1 { background: var(--avatar-1); color: #fff; }
.avatar--c2 { background: var(--avatar-2); color: #fff; }
.avatar--c3 { background: var(--avatar-3); color: #fff; }
.avatar--c4 { background: var(--avatar-4); color: #fff; }

/* --------------------------------------------------------------- buttons */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    font: 600 12.5px var(--font-display);
    padding: 9px 15px;
    border-radius: 9px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn:hover { background: var(--hover); color: var(--text); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn--primary {
    border-color: transparent;
    background: var(--accent);
    color: var(--on-accent);
    padding: 10px 18px;
}

.btn--primary:hover { background: var(--accent-hover); color: var(--on-accent); }

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

.btn--danger:hover { background: var(--danger-soft); color: var(--danger); }

.btn--danger-solid {
    border-color: transparent;
    background: var(--danger);
    color: #fff;
}

.btn--danger-solid:hover { background: color-mix(in oklch, var(--danger) 85%, black); color: #fff; }

.btn--sm {
    font: 600 12px var(--font-body);
    padding: 7px 13px;
    border-radius: 8px;
}

.btn--block { width: 100%; }

.link-button {
    font: 600 12px var(--font-body);
    color: var(--accent);
    background: none;
    border: 0;
    padding: 0;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
}

.link-button--danger { color: var(--danger); }
.link-button:disabled { color: var(--text-disabled); cursor: not-allowed; }

.spinner {
    width: 14px;
    height: 14px;
    border-radius: 100px;
    border: 2px solid color-mix(in oklch, currentColor 30%, transparent);
    border-top-color: currentColor;
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading {
    display: flex;
    align-items: center;
    gap: 10px;
    font: 500 13px var(--font-body);
    color: var(--text-muted);
}

/* ---------------------------------------------------------------- forms */

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.field__label {
    font: 600 11.5px var(--font-display);
    color: var(--text-muted);
}

.field__hint {
    font: 400 11.5px var(--font-body);
    color: var(--text-muted);
}

.field__error,
.validation-message {
    font: 500 11.5px var(--font-body);
    color: var(--danger);
}

.input,
.select {
    font: 500 13px var(--font-body);
    padding: 10px 12px;
    border-radius: 9px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    width: 100%;
    min-width: 0;
}

.input:focus,
.select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 18%, transparent);
}

.input[readonly],
.input:disabled {
    background: var(--surface-muted);
    color: var(--text-muted);
}

.input.invalid,
.input--invalid { border-color: var(--danger); }

.input--compact,
.select--compact {
    font-size: 12.5px;
    padding: 9px 12px;
    width: auto;
}

.input--search {
    flex: 1 1 200px;
    max-width: 260px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 16px;
}

.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.toolbar__count {
    font: 500 12px var(--font-body);
    color: var(--text-muted);
}

.segmented {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 9px;
    overflow: hidden;
}

.segmented button {
    padding: 9px 15px;
    cursor: pointer;
    font: 600 12px var(--font-display);
    background: var(--surface);
    color: var(--text-muted);
    border: 0;
}

.segmented button + button { border-left: 1px solid var(--border); }

.segmented button.active {
    background: var(--accent);
    color: var(--on-accent);
}

.toggle {
    width: 38px;
    height: 22px;
    border-radius: 100px;
    cursor: pointer;
    flex-shrink: 0;
    border: 0;
    padding: 2px;
    background: var(--toggle-off);
    display: flex;
}

.toggle::after {
    content: "";
    width: 18px;
    height: 18px;
    border-radius: 100px;
    background: #fff;
    transition: transform 0.15s ease;
}

.toggle[aria-checked="true"] { background: var(--accent); }
.toggle[aria-checked="true"]::after { transform: translateX(16px); }

.toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font: 500 13px var(--font-body);
}

.option-pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.option-pills button {
    font: 600 12px var(--font-display);
    padding: 9px 16px;
    border-radius: 9px;
    border: 1px solid var(--border);
    cursor: pointer;
    background: var(--surface);
    color: var(--text-muted);
}

.option-pills button.active {
    background: var(--accent);
    color: var(--on-accent);
    border-color: var(--accent);
}

.check-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 6px;
    border-radius: 8px;
    cursor: pointer;
    font: 500 12.5px var(--font-body);
}

.check-row:hover { background: var(--surface-muted); }
.check-row--readonly { cursor: default; }
.check-row--readonly:hover { background: none; }

.check-row input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--accent);
    flex-shrink: 0;
    margin: 0;
}

.check-row__label { flex: 1; text-wrap: pretty; }

.check-row__mark {
    font: 700 12px var(--font-display);
    width: 14px;
    flex-shrink: 0;
}

/* ------------------------------------------------------------------ tabs */

.tabs {
    display: flex;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab {
    padding: 10px 14px;
    cursor: pointer;
    font: 600 13px var(--font-display);
    color: var(--text-muted);
    border: 0;
    background: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    text-decoration: none;
    white-space: nowrap;
}

.tab:hover { color: var(--text); }

.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.side-nav {
    flex: 1 1 180px;
    min-width: 0;
    max-width: 196px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.side-nav a {
    padding: 9px 12px;
    border-radius: 9px;
    font: 600 12.5px var(--font-display);
    color: var(--text);
    text-decoration: none;
}

.side-nav a:hover { background: var(--hover); color: var(--text); }

.side-nav a.active {
    background: var(--accent);
    color: var(--on-accent);
}

.settings-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 24px 28px;
    align-items: flex-start;
}

.settings-layout__main {
    flex: 999 1 300px;
    min-width: 0;
    max-width: 720px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ----------------------------------------------------------------- table */

.table-wrap {
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    font: 700 10.5px var(--font-display);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 13px 10px;
    text-align: left;
}

.table td {
    font: 400 12.5px var(--font-body);
    padding: 13px 10px;
    border-top: 1px solid var(--border-soft);
    vertical-align: middle;
}

.table th:first-child,
.table td:first-child { padding-left: 20px; }

.table th:last-child,
.table td:last-child { padding-right: 20px; }

.table .num { text-align: right; }

.table__expanded td {
    padding: 0 20px 14px;
    background: var(--surface-sunken);
    border-top: 0;
}

.person {
    display: flex;
    align-items: center;
    gap: 10px;
}

.person__text {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
    min-width: 0;
}

.person__name {
    font: 600 13px var(--font-body);
    color: var(--accent);
    text-decoration: none;
}

.person__meta {
    font: 400 11px var(--font-body);
    color: var(--text-muted);
}

/* ------------------------------------------------------------- accordion */

.accordion {
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
}

.accordion__head {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    cursor: pointer;
    width: 100%;
    background: none;
    border: 0;
    text-align: left;
    color: inherit;
}

.accordion__head:hover { background: var(--surface-sunken); }

.accordion__caret {
    font: 600 12px var(--font-display);
    width: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.accordion__title {
    font: 700 14.5px var(--font-display);
}

.accordion__count {
    font: 500 11.5px var(--font-body);
    color: var(--text-muted);
    margin-left: auto;
}

.accordion__body {
    border-top: 1px solid var(--border-soft);
    padding: 16px 20px 20px;
}

.accordion__note {
    font: 400 12px var(--font-body);
    color: var(--text-muted);
    margin: 0 0 14px;
    text-wrap: pretty;
}

.check-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 4px 20px;
}

/* ------------------------------------------------------- student roster */

.roster {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.student-card {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    color: inherit;
    text-decoration: none;
    background: var(--surface);
}

.student-card:hover {
    border-color: var(--border-accent);
    background: var(--surface-sunken);
    color: inherit;
}

.student-card__head {
    display: flex;
    align-items: center;
    gap: 11px;
}

.student-card__text {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.student-card__name {
    font: 700 13.5px var(--font-display);
}

.student-card__meta {
    font: 400 11.5px var(--font-body);
    color: var(--text-muted);
}

.student-card__foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-top: 11px;
    border-top: 1px solid var(--border-soft);
    font: 400 11.5px var(--font-body);
    color: var(--text-muted);
}

.student-card__cta {
    font: 600 11.5px var(--font-body);
    color: var(--accent);
    white-space: nowrap;
}

/* ------------------------------------------------------------- tier bars */

.bar-label {
    display: flex;
    justify-content: space-between;
    font: 600 12px var(--font-body);
    margin-bottom: 5px;
}

.bar {
    height: 8px;
    border-radius: 100px;
    background: var(--surface-muted);
    overflow: hidden;
}

.bar__fill {
    height: 100%;
    border-radius: 100px;
    background: var(--accent);
}

.bar--tier1 { background: var(--tier1-soft); }
.bar--tier1 .bar__fill { background: var(--tier1-bar); }
.bar--tier2 { background: var(--tier2-soft); }
.bar--tier2 .bar__fill { background: var(--tier2-bar); }
.bar--tier3 { background: var(--tier3-soft); }
.bar--tier3 .bar__fill { background: var(--tier3-bar); }

/* --------------------------------------------------------------- library */

.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 8px;
}

.doc {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 11px 13px;
    border: 1px solid var(--border-faint);
    border-radius: 10px;
    background: var(--surface);
    font: 500 13px var(--font-body);
}

.doc__title { flex: 1; text-wrap: pretty; }
.doc__version { font: 500 10.5px var(--font-body); color: var(--text-faint); }

/* ---------------------------------------------------------- list items */

.list-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 14px;
    border: 1px solid var(--border-soft);
    border-radius: 11px;
}

.list-row__text {
    display: flex;
    flex-direction: column;
    line-height: 1.35;
    min-width: 0;
}

.list-row__title { font: 600 13px var(--font-body); }
.list-row__meta { font: 400 11.5px var(--font-body); color: var(--text-muted); }

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 10px;
}

.template {
    border: 1px solid var(--border);
    border-radius: 11px;
    padding: 14px;
    cursor: pointer;
    text-align: left;
    background: var(--surface);
    color: inherit;
}

.template:hover { border-color: var(--border-accent); }

.template.active {
    border-color: var(--accent);
    background: var(--accent-wash);
}

.template__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 5px;
    font: 700 13px var(--font-display);
}

.template__summary {
    font: 400 11.5px var(--font-body);
    color: var(--text-muted);
    text-wrap: pretty;
}

.target-banner {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    padding: 16px 18px;
    border-radius: 12px;
    background: var(--accent-soft);
    margin: 16px 0 22px;
}

.target-banner .avatar { background: var(--surface); color: var(--accent); }

/* ----------------------------------------------------------------- modal */

.modal-scrim {
    position: fixed;
    inset: 0;
    background: var(--scrim);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 60;
    padding: 16px;
}

.modal {
    width: 420px;
    max-width: 100%;
    background: var(--surface);
    border-radius: 16px;
    padding: 26px;
    box-shadow: var(--shadow-modal);
}

.modal__title { font: 800 18px var(--font-display); margin: 0 0 8px; }
.modal__subtitle { font: 400 13px var(--font-body); color: var(--text-muted); margin: 0 0 14px; }

.modal__effects {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 0 0 22px;
    padding: 0;
    list-style: none;
    font: 500 12.5px var(--font-body);
}

.modal__effects li::before {
    content: "•";
    color: var(--accent);
    font: 700 13px var(--font-display);
    margin-right: 9px;
}

.modal__actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* --------------------------------------------------------------- landing */

.landing {
    max-width: 560px;
    margin: 6vh auto 0;
    text-align: center;
}

.landing__logo {
    width: 96px;
    height: 96px;
    object-fit: contain;
    margin-bottom: 18px;
}

.landing .card { text-align: left; margin-top: 26px; }

/* ----------------------------------------------------- blazor framework */

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto;
}

.loading-progress circle {
    fill: none;
    stroke: var(--border);
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--accent);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    text-align: center;
    font: 700 13px var(--font-display);
    color: var(--text-muted);
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading");
}

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    color: #1d1f27;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.blazor-error-boundary {
    background: var(--danger-soft);
    border: 1px solid var(--danger-border);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    color: var(--danger);
}

.blazor-error-boundary::after {
    content: "An error has occurred.";
}

/* ------------------------------------------------------------ responsive */

@media (max-width: 1100px) {
    .titlebar__center { display: none; }
}

@media (max-width: 860px) {
    .titlebar { padding: 0 12px; }
    .titlebar__start, .titlebar__actions { min-width: 0; }
    .titlebar__tagline, .titlebar__user-text, .titlebar__divider { display: none; }
    .titlebar__section { font-size: 9.5px; padding: 3px 8px; }
    .modebar { padding: 7px 12px; }
    .modebar__text { display: none; }
    .titlebar__menu { display: flex; }

    .sidebar {
        position: absolute;
        inset: 0 auto 0 0;
        z-index: 40;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        visibility: hidden;
    }

    .sidebar.open {
        transform: none;
        visibility: visible;
        box-shadow: var(--shadow-modal);
    }

    .sidebar-scrim.open {
        display: block;
        position: absolute;
        inset: 0;
        z-index: 35;
        background: var(--scrim);
        border: 0;
    }

    .notif-panel {
        position: absolute;
        inset: 0 0 0 auto;
        z-index: 30;
        max-width: 100%;
    }

    .notif-panel.open { box-shadow: var(--shadow-modal); }

    .content { padding: 22px 16px; }

    .page-header { flex-wrap: wrap; }
}

@media (max-width: 480px) {
    .titlebar__name { font-size: 14px; }
    .titlebar__actions { gap: 8px; }
    .titlebar__logout { display: none; }
    .shell--platform .titlebar__wordmark,
    .shell--district .titlebar__wordmark { display: none; }
    .notif-panel.open { width: 100%; }
    .notif-panel__inner { width: 100%; }
}