:root {
    --ink: #2d3436;
    --muted: #5f6b70;
    --line: #d7dddf;
    --paper: #fffdf8;
    --panel: #ffffff;
    --accent: #e17055;
    --accent-dark: #b94f35;
    --green: #dff3e7;
    --blue: #dceeff;
    --yellow: #fff5c7;
    --red: #ffe0dc;
    --shadow: 5px 5px 0 rgba(45, 52, 54, 0.18);
    --font: 'Fredoka', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: #fafaf7;
    color: var(--ink);
    font-family: var(--font);
    font-weight: 700;
}

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

.app-header,
.control-band,
.settings-panel,
.codes-panel,
.access-loading-panel {
    border: 3px solid var(--ink);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: var(--shadow);
}

.app-header {
    width: min(1180px, calc(100% - 32px));
    margin: 18px auto 0;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.brand-link {
    display: inline-flex;
    gap: 0.16em;
    align-items: baseline;
    color: var(--ink);
    text-decoration: none;
    font-family: 'Fredoka', var(--font);
    font-size: clamp(1.45rem, 3.6vw, 2rem);
    font-weight: 700;
    line-height: 1;
}

.brand-link strong {
    color: var(--accent);
    font-weight: 700;
}

.pupil-access-app {
    width: min(1180px, calc(100% - 32px));
    margin: 18px auto 42px;
    display: grid;
    gap: 18px;
}

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

h1 {
    margin-bottom: 2px;
    font-size: clamp(1.2rem, 2vw, 1.55rem);
    line-height: 1.05;
}

h2 {
    margin-bottom: 8px;
    font-size: clamp(1.3rem, 3vw, 1.8rem);
}

.hero-copy,
.codes-header p {
    margin-bottom: 0;
    color: var(--muted);
    font-size: 1rem;
}

.class-picker {
    display: grid;
    gap: 6px;
    align-self: center;
}

.header-actions {
    display: flex;
    align-items: end;
    gap: 14px;
}

.header-actions .class-picker {
    min-width: 220px;
}

.lock-message-field {
    margin-top: 14px;
    display: grid;
    gap: 8px;
}

textarea {
    width: 100%;
    max-width: 640px;
    resize: vertical;
    border: 2px solid var(--line);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--ink);
    background: var(--paper);
    line-height: 1.25;
}

label {
    color: var(--muted);
    font-size: 0.95rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

select {
    width: 100%;
    min-height: 40px;
    border: 2px solid var(--ink);
    border-radius: 8px;
    background: var(--paper);
    color: var(--ink);
    padding: 0 12px;
    box-shadow: 2px 2px 0 rgba(45, 52, 54, 0.16);
}

.status-message {
    border: 2px solid var(--line);
    border-radius: 8px;
    background: #eef6ff;
    padding: 14px 18px;
    color: #315f85;
}

.status-message.success {
    background: var(--green);
    color: #2f6f46;
}

.status-message.error {
    background: var(--red);
    color: #8f3e36;
}

.access-loading-panel {
    min-height: 180px;
    padding: 28px;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 22px;
    overflow: hidden;
}

.loading-mark {
    width: 74px;
    height: 74px;
    border: 3px solid var(--ink);
    border-radius: 8px;
    display: grid;
    place-items: center;
    color: #ffffff;
    background: var(--accent);
    box-shadow: 4px 4px 0 rgba(45, 52, 54, 0.18);
    animation: loading-bob 1.3s ease-in-out infinite;
}

.loading-mark i {
    font-size: 1.8rem;
}

.access-loading-panel h2 {
    margin-bottom: 6px;
}

.access-loading-panel p {
    margin-bottom: 18px;
    color: var(--muted);
    font-size: 1rem;
}

.loading-skeleton {
    display: grid;
    gap: 10px;
}

.loading-skeleton span {
    height: 18px;
    width: min(520px, 100%);
    border: 2px solid var(--line);
    border-radius: 999px;
    background: linear-gradient(90deg, #ffffff 0%, #eef6f1 42%, #ffffff 82%);
    background-size: 220% 100%;
    animation: loading-shimmer 1.4s linear infinite;
}

.loading-skeleton span:nth-child(2) {
    width: min(420px, 86%);
}

.loading-skeleton span:nth-child(3) {
    width: min(300px, 66%);
}

.is-loading-access .summary-grid,
.is-loading-access .control-band,
.is-loading-access .settings-panel,
.is-loading-access .codes-panel {
    display: none;
}

.hidden {
    display: none !important;
}

@keyframes loading-bob {
    0%,
    100% {
        transform: translateY(0) rotate(-3deg);
    }
    50% {
        transform: translateY(-5px) rotate(3deg);
    }
}

@keyframes loading-shimmer {
    from {
        background-position: 120% 0;
    }
    to {
        background-position: -120% 0;
    }
}

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

.summary-card {
    border: 2px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    padding: 16px;
}

.summary-card span {
    display: block;
    color: var(--muted);
    font-size: 0.9rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.summary-card strong {
    display: block;
    margin-top: 6px;
    font-size: 1.75rem;
}

.control-band {
    padding: 22px;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.control-band {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
}

.codes-header {
    padding: 0 0 18px;
    display: grid;
    grid-template-columns: minmax(180px, 1fr) auto;
    align-items: start;
    gap: 14px;
}

.control-band > div:first-child {
    min-width: 0;
}

.control-actions,
.codes-actions,
.row-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}

.codes-actions {
    grid-column: 1 / -1;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    justify-self: stretch;
}

.codes-toggle-top {
    justify-self: end;
    min-width: 132px;
}

.codes-actions button {
    width: 100%;
    min-width: 0;
    white-space: nowrap;
}

button {
    min-height: 48px;
    border: 3px solid var(--ink);
    border-radius: 8px;
    padding: 0 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--ink);
    background: var(--panel);
    box-shadow: 3px 3px 0 rgba(45, 52, 54, 0.18);
    cursor: pointer;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent);
    color: #ffffff;
}

.btn-secondary,
.back-button {
    background: var(--panel);
}

.back-button {
    min-height: 48px;
    border: 3px solid var(--ink);
    border-radius: 8px;
    padding: 0 16px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    text-decoration: none;
    box-shadow: 3px 3px 0 rgba(45, 52, 54, 0.18);
}

.settings-panel,
.codes-panel {
    padding: 22px;
}

.panel-heading-row {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 14px;
    flex-wrap: wrap;
}

.panel-heading-row p {
    margin: 0;
    color: var(--muted);
}

.btn-secondary.compact {
    min-height: 38px;
    padding: 0 12px;
}

.toggle-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.dashboard-app-access {
    width: 100%;
    max-width: 640px;
    margin-top: 12px;
    display: grid;
    gap: 8px;
}

.field-label {
    color: var(--muted);
    font-size: 0.95rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.app-toggle {
    border: 2px solid var(--line);
    border-radius: 8px;
    min-height: 56px;
    padding: 8px 12px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 62px;
    gap: 12px;
    align-items: center;
    background: var(--paper);
}

.app-toggle > span:first-child {
    min-width: 0;
}

.app-toggle strong {
    display: block;
    color: var(--muted);
    font-size: 0.92rem;
    letter-spacing: 0.045em;
    line-height: 1.15;
    text-transform: uppercase;
}

.pupil-meta {
    display: block;
    margin-top: 8px;
    color: var(--muted);
    font-size: clamp(0.95rem, 1.7vw, 1.12rem);
    letter-spacing: 0;
    line-height: 1.16;
}

.switch {
    --switch-width: 56px;
    --switch-height: 32px;
    --switch-border: 2px;
    --switch-gap: 2px;
    --switch-knob: 24px;
    position: relative;
    justify-self: end;
    width: var(--switch-width);
    height: var(--switch-height);
}

.block-stack-group-form {
    display: grid;
    gap: 14px;
    margin-top: 16px;
    padding: 14px;
    border: 2px solid var(--ink);
    border-radius: 8px;
    background: var(--paper);
}

.block-stack-group-form label {
    display: grid;
    gap: 8px;
}

.block-stack-group-form input[type="text"] {
    width: min(420px, 100%);
    min-height: 42px;
    border: 2px solid var(--ink);
    border-radius: 8px;
    background: #ffffff;
    color: var(--ink);
    padding: 0 12px;
}

.block-stack-class-picker {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 8px;
}

.class-chip {
    min-height: 42px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: 2px solid var(--line);
    border-radius: 8px;
    background: #ffffff;
    color: var(--ink);
    letter-spacing: 0;
    text-transform: none;
}

.class-chip input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

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

.block-stack-group-list {
    display: grid;
    gap: 8px;
    margin-top: 14px;
}

.block-stack-group-row,
.block-stack-score-row {
    min-height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border: 2px solid var(--line);
    border-radius: 8px;
    background: #ffffff;
}

.block-stack-score-row {
    align-items: center;
}

.block-stack-score-list {
    display: grid;
    gap: 8px;
    margin-top: 14px;
}

.block-stack-group-row strong,
.block-stack-group-row small,
.block-stack-score-row strong,
.block-stack-score-row small {
    display: block;
}

.block-stack-group-row small,
.block-stack-score-row small {
    margin-top: 3px;
    color: var(--muted);
}

.score-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(74px, auto));
    gap: 8px;
    margin: 0;
}

.score-metrics div {
    min-width: 74px;
    border: 2px solid var(--line);
    border-radius: 8px;
    padding: 7px 9px;
    background: var(--paper);
}

.score-metrics dt,
.score-metrics dd {
    margin: 0;
}

.score-metrics dt {
    color: var(--muted);
    font-size: 0.72rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.score-metrics dd {
    margin-top: 2px;
    color: var(--ink);
    font-size: 1.02rem;
}

.switch input {
    position: absolute;
    inset: 0;
    opacity: 0;
}

.switch span {
    position: absolute;
    inset: 0;
    border: var(--switch-border) solid var(--ink);
    border-radius: 999px;
    background: #e9eeee;
}

.switch span::after {
    box-sizing: border-box;
    content: '';
    position: absolute;
    top: var(--switch-gap);
    left: var(--switch-gap);
    width: var(--switch-knob);
    height: var(--switch-knob);
    border: 2px solid var(--ink);
    border-radius: 999px;
    background: #ffffff;
    transition: transform 0.16s ease;
}

.switch input:checked + span {
    background: var(--green);
}

.switch input:checked + span::after {
    transform: translateX(calc(
        var(--switch-width) -
        (var(--switch-border) * 2) -
        (var(--switch-gap) * 2) -
        var(--switch-knob)
    ));
}

.codes-panel.is-collapsed {
    padding-bottom: 22px;
}

.codes-panel.is-collapsed .codes-header {
    padding-bottom: 0;
}

.codes-panel.is-collapsed .codes-actions {
    display: none;
}

.pupil-table {
    display: grid;
    gap: 10px;
}

.pupil-row {
    border: 2px solid var(--line);
    border-radius: 8px;
    padding: 12px 14px;
    display: grid;
    grid-template-columns: minmax(160px, 1fr) minmax(150px, auto) minmax(230px, auto);
    align-items: center;
    gap: 14px;
    background: #ffffff;
}

.pupil-name {
    font-size: 1.1rem;
}

.code-value {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 1.1rem;
    letter-spacing: 0.04em;
}

.icon-btn {
    width: 48px;
    padding: 0;
}

.empty-state {
    border: 2px dashed var(--line);
    border-radius: 8px;
    padding: 22px;
    color: var(--muted);
}

.print-cards {
    display: none;
}

@media (max-width: 820px) {
    .summary-grid,
    .toggle-grid,
    .pupil-row {
        grid-template-columns: 1fr;
    }

    .header-actions {
        align-items: stretch;
        flex-direction: column;
        width: min(100%, 260px);
    }

    .control-band,
    .codes-header,
    .block-stack-score-row {
        align-items: stretch;
        flex-direction: column;
    }

    .control-actions,
    .codes-actions,
    .row-actions {
        justify-content: stretch;
    }

    .control-actions button,
    .codes-actions button,
    .row-actions button {
        flex: 1 1 auto;
    }

    .score-metrics {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .access-loading-panel {
        grid-template-columns: 1fr;
    }
}

@media print {
    @page {
        size: A4 portrait;
        margin: 10mm;
    }

    body > :not(.pupil-access-app),
    .pupil-access-app > :not(.print-cards) {
        display: none !important;
    }

    body {
        background: #ffffff;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .pupil-access-app {
        width: 100%;
        margin: 0;
    }

    .print-cards {
        display: block;
        padding: 0;
    }

    .print-code-page {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        grid-template-rows: repeat(4, 45mm);
        gap: 6mm 10mm;
        align-content: start;
        min-height: 0;
        break-after: page;
        break-inside: avoid;
        page-break-after: always;
        page-break-inside: avoid;
    }

    .print-code-page:last-child {
        break-after: auto;
        page-break-after: auto;
    }

    .print-code-card {
        border: 2px solid #222;
        border-radius: 6px;
        padding: 6mm;
        min-height: 0;
        height: 45mm;
        display: grid;
        align-content: start;
        gap: 2.5mm;
        overflow: hidden;
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .print-code-card h3 {
        margin: 0;
        font-size: 14pt;
        line-height: 1.15;
    }

    .print-code-card p {
        margin: 0;
        color: #444;
        font-size: 9pt;
        line-height: 1.15;
    }

    .print-code-card strong {
        display: block;
        font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
        font-size: 18pt;
        line-height: 1.1;
        letter-spacing: 0.04em;
    }

    .print-code-card span {
        display: block;
        margin-top: auto;
        color: #333;
        font-size: 10pt;
        line-height: 1.15;
    }
}