/*
 * Mise en page mobile first : conçue d'abord pour un téléphone tenu verticalement,
 * puis élargie pour la tablette et l'ordinateur.
 */
:root {
    --color-bg: #f6f4ee;
    --color-surface: #ffffff;
    --color-text: #1f2a24;
    --color-muted: #5a665f;
    --color-primary: #2f5d50;
    --color-primary-contrast: #ffffff;
    --color-border: #d9d5c8;
    --color-success: #1f7a3d;
    --color-warning: #8a5a00;
    --color-danger: #a1261b;

    --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-size-base: 1.0625rem;
    --radius: 12px;
    --gap: 1rem;
    --touch-target: 48px;
    --content-width: 40rem;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Un élément masqué le reste, même si sa classe lui donne un affichage (boutons en flex…) */
[hidden] {
    display: none !important;
}

html {
    font-size: 100%;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100dvh;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.5;
}

/* Police adaptée aux élèves dys, activée par l'enseignant */
body.font-dys {
    --font-body: "OpenDyslexic", "Comic Sans MS", system-ui, sans-serif;
    letter-spacing: 0.03em;
    word-spacing: 0.1em;
}

.skip-link {
    position: absolute;
    left: -999px;
}

.skip-link:focus {
    left: var(--gap);
    top: var(--gap);
    z-index: 10;
    padding: 0.5rem 1rem;
    background: var(--color-surface);
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--gap);
    min-height: 56px;
    padding: 0 var(--gap);
    padding-top: env(safe-area-inset-top);
    background: var(--color-primary);
    color: var(--color-primary-contrast);
}

.app-header a {
    color: inherit;
}

.app-header__brand {
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
}

.app-header__nav {
    display: flex;
    gap: var(--gap);
    font-size: 0.9375rem;
}

.app-header__nav a {
    display: inline-flex;
    align-items: center;
    min-height: var(--touch-target);
}

.app-main {
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: var(--gap);
    padding-bottom: calc(var(--gap) + env(safe-area-inset-bottom));
}

h1 {
    font-size: 1.5rem;
    line-height: 1.25;
    margin: 0.5rem 0 1rem;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--gap);
    margin-bottom: var(--gap);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: var(--touch-target);
    min-width: var(--touch-target);
    padding: 0 1.25rem;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-primary);
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    touch-action: manipulation;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-primary-contrast);
}

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

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid #f0b429;
    outline-offset: 2px;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    border-left: 6px solid var(--color-primary);
    background: var(--color-surface);
    margin-bottom: var(--gap);
}

.flash--success { border-left-color: var(--color-success); }
.flash--warning { border-left-color: var(--color-warning); }
.flash--error { border-left-color: var(--color-danger); }

/* Formulaires : champs d'au moins 16 px pour éviter le zoom automatique sur téléphone */
.form > div,
.form-row {
    margin-bottom: var(--gap);
}

.form label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.form input[type="email"],
.form input[type="password"],
.form input[type="text"] {
    width: 100%;
    min-height: var(--touch-target);
    padding: 0 0.75rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    font-size: max(1rem, 16px);
}

.form-row--check {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.form-row--check input {
    width: 24px;
    height: 24px;
    margin: 0;
}

.form-row--check label {
    margin: 0;
    font-weight: 400;
}

.form .help-text {
    font-size: 0.875rem;
    color: var(--color-muted);
}

.form ul {
    list-style: none;
    padding: 0;
    margin: 0.25rem 0;
    color: var(--color-danger);
    font-weight: 600;
}

.form input[type="number"],
.form select {
    width: 100%;
    min-height: var(--touch-target);
    padding: 0 0.75rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    font-size: max(1rem, 16px);
}

.form fieldset {
    border: 0;
    padding: 0;
    margin: 0 0 var(--gap);
}

.form legend {
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

/* Case à cocher : la case puis son libellé, sur une ligne */
.form input[type="checkbox"] {
    width: 24px;
    height: 24px;
    margin: 0 0.75rem 0 0;
    vertical-align: middle;
}

.form input[type="checkbox"] + label {
    display: inline;
    font-weight: 400;
}

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

/* Administration : pensée pour l'ordinateur, utilisable sur téléphone */
body.admin {
    --content-width: 80rem;
}

.admin-layout {
    display: grid;
    gap: var(--gap);
}

.admin-nav {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
}

.admin-nav a {
    display: inline-flex;
    align-items: center;
    min-height: var(--touch-target);
    padding: 0 1rem;
    border-radius: var(--radius);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
}

.admin-nav a[aria-current="page"] {
    background: var(--color-primary);
    color: var(--color-primary-contrast);
}

.admin-content {
    min-width: 0;
}

.admin-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--gap);
    margin-bottom: var(--gap);
}

.admin-toolbar h1 {
    margin: 0;
}

.table-wrapper {
    overflow-x: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

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

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.table tbody tr:last-child td {
    border-bottom: 0;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.actions form {
    margin: 0;
}

/* Les états sont écrits en toutes lettres : la couleur n'est qu'un repère en plus */
.badge {
    display: inline-block;
    padding: 0.125rem 0.625rem;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    font-size: 0.875rem;
    font-weight: 600;
}

.badge--sent { border-color: var(--color-warning); color: var(--color-warning); }
.badge--accepted { border-color: var(--color-success); color: var(--color-success); }
.badge--expired,
.badge--revoked { border-color: var(--color-danger); color: var(--color-danger); }

.details {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0.5rem 1.5rem;
    margin: 0;
}

.details dt {
    font-weight: 600;
    color: var(--color-muted);
}

.details dd {
    margin: 0;
}

.badge--published { border-color: var(--color-success); color: var(--color-success); }

.inline-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.plain-list {
    padding-left: 1.25rem;
}

/* Crans : la couleur accompagne toujours le chiffre, jamais seule */
.rung-cell {
    display: inline-block;
    min-width: 2rem;
    padding: 0.125rem 0.375rem;
    border-radius: 6px;
    text-align: center;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

td.rung-cell {
    display: table-cell;
    border-radius: 0;
}

.rung-cell--0 { background: #eceae4; color: #4a4a4a; }
.rung-cell--1 { background: #f6e3c3; color: #5c3d00; }
.rung-cell--2 { background: #f2d58a; color: #4d3800; }
.rung-cell--3 { background: #bfe0c4; color: #1d4d27; }
.rung-cell--4 { background: #84c595; color: #123a1c; }
.rung-cell--5 { background: #2f7a47; color: #ffffff; }

.rung-cell.is-locked {
    background-image: repeating-linear-gradient(45deg, transparent 0 6px, rgb(0 0 0 / 0.06) 6px 12px);
}

.legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--gap);
}

.filters label {
    display: grid;
    gap: 0.25rem;
    font-weight: 600;
}

.filters select {
    min-height: var(--touch-target);
    padding: 0 0.5rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font: inherit;
}

.matrix th,
.matrix td {
    padding: 0.375rem 0.5rem;
}

.matrix tbody th {
    position: sticky;
    left: 0;
    background: var(--color-surface);
    white-space: nowrap;
}

.matrix__skill {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 0.8125rem;
}

.inline-form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin: 0;
}

.ready-list li {
    padding: 0.375rem 0;
    border-bottom: 1px solid var(--color-border);
}

.inline-fields {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--gap);
}

.inline-fields > div {
    flex: 1 1 12rem;
    margin: 0;
}

.report-grid {
    display: grid;
    gap: 0 var(--gap);
}

.checkbox-grid,
.checkbox-list {
    display: grid;
    gap: 0.25rem 1rem;
    margin-bottom: var(--gap);
}

.checkbox-grid > div,
.checkbox-list > div {
    display: grid;
    gap: 0.25rem;
}

.checkbox-list label,
.checkbox-grid label {
    font-weight: 400;
}

.form textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font: inherit;
    font-size: max(1rem, 16px);
}

.replay__statement {
    font-size: 1.25rem;
    font-weight: 600;
}

@media (min-width: 48rem) {
    .report-grid {
        grid-template-columns: 1fr 1fr;
    }

    .checkbox-grid {
        grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
    }
}

@media (min-width: 64rem) {
    .admin-layout {
        grid-template-columns: 14rem 1fr;
        align-items: start;
    }

    .admin-nav {
        flex-direction: column;
        position: sticky;
        top: calc(56px + var(--gap));
    }
}

/* Figures des exercices (SVG produits par les gabarits) */
.exercise-figure {
    max-width: 100%;
    height: auto;
    overflow: visible;
}

.figure-axis,
.figure-tick,
.figure-line {
    stroke: var(--color-text);
    stroke-width: 2;
    fill: none;
}

.figure-line--dashed {
    stroke-dasharray: 6 4;
}

.figure-label {
    fill: var(--color-text);
    font-size: 14px;
    font-family: var(--font-body);
}

.figure-shape {
    fill: #e3efe9;
    stroke: var(--color-primary);
    stroke-width: 2;
}

.figure-part {
    fill: var(--color-surface);
    stroke: var(--color-text);
    stroke-width: 2;
}

.figure-part.is-colored {
    fill: #f0b429;
}

.figure-graph {
    stroke: var(--color-primary);
    stroke-width: 3;
}

.figure-point {
    fill: var(--color-primary);
}

.figure-shape-line {
    stroke-width: 5;
    stroke-linecap: round;
    cursor: pointer;
}

.figure-shape-line.is-selected {
    stroke: #f0b429;
    stroke-width: 7;
}

.figure-solution {
    stroke: var(--color-primary);
    stroke-width: 6;
    stroke-linecap: round;
}

.figure-bracket {
    stroke: var(--color-text);
    stroke-width: 3;
}

.figure-match {
    stroke: #b5651d;
    stroke-width: 4;
    stroke-linecap: round;
}

.figure-cell {
    fill: var(--color-surface);
    stroke: var(--color-text);
    stroke-width: 1;
}

.figure-cell--head {
    fill: #e3efe9;
}

.figure-cell.is-selected {
    fill: #f0b429;
}

.figure-robot {
    fill: var(--color-primary);
    pointer-events: none;
}

.figure-robot-arrow {
    fill: var(--color-surface);
    pointer-events: none;
}

.figure-treasure {
    fill: #c77d00;
    font-size: 24px;
    pointer-events: none;
}

.figure-code-block {
    fill: #f4f6f5;
    stroke: var(--color-border);
}

.figure-code {
    fill: var(--color-text);
    font-family: ui-monospace, Menlo, Consolas, monospace;
    font-size: 15px;
}

.figure-sector {
    stroke: var(--color-surface);
    stroke-width: 2;
}

.figure-sector--0 {
    fill: #f0b429;
}

.figure-sector--1 {
    fill: #8fd3b6;
}

.figure-sector--2 {
    fill: #9db8e8;
}

.figure-sector--3 {
    fill: #e8a39d;
}

.preview-question__statement {
    font-size: 1.25rem;
    font-weight: 600;
}

.preview-question__figure {
    margin: 0.5rem 0 1rem;
}

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

@media (min-width: 48rem) {
    :root {
        --gap: 1.5rem;
        --content-width: 64rem;
    }

    h1 {
        font-size: 2rem;
    }
}