/*
 * Secret Share - feuille de style
 * Thème clair/sombre automatique selon les préférences du système.
 *
 * @license AGPL-3.0-or-later
 */

:root {
    color-scheme: light dark;

    --bg: #f5f6f8;
    --surface: #ffffff;
    --surface-muted: #f0f2f5;
    --text: #17191e;
    --text-muted: #5a6270;
    --border: #dfe3e9;
    --border-strong: #c3c9d3;
    --accent: #3451d1;
    --accent-hover: #2a43b3;
    --accent-soft: #e8ecfd;
    --accent-contrast: #ffffff;
    --danger: #c0392b;
    --danger-hover: #a53125;
    --danger-soft: #fdecea;
    --warning-soft: #fff6e0;
    --warning-border: #f0d48a;
    --warning-text: #6b4e00;
    --info-soft: #eaf2fc;
    --info-border: #bcd4f2;
    --focus: #3451d1;
    --shadow: 0 1px 2px rgb(16 24 40 / 4%), 0 8px 24px rgb(16 24 40 / 6%);

    --radius: 14px;
    --radius-sm: 9px;
    --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0e1014;
        --surface: #161920;
        --surface-muted: #1d2129;
        --text: #e7e9ee;
        --text-muted: #9aa3b2;
        --border: #2a2f3a;
        --border-strong: #3a4150;
        --accent: #7d93ff;
        --accent-hover: #98a9ff;
        --accent-soft: #1e2544;
        --accent-contrast: #0e1014;
        --danger: #ff7b6e;
        --danger-hover: #ff978c;
        --danger-soft: #3a1c1a;
        --warning-soft: #2e2613;
        --warning-border: #5c4a1c;
        --warning-text: #f2d68b;
        --info-soft: #172235;
        --info-border: #27406a;
        --focus: #98a9ff;
        --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 25%);
    }
}

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

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

body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-underline-offset: 0.18em;
}

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

:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

[hidden] {
    display: none !important;
}

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

.skip-link {
    position: absolute;
    left: 1rem;
    top: -3rem;
    padding: 0.5rem 1rem;
    background: var(--surface);
    border-radius: var(--radius-sm);
    z-index: 10;
}

.skip-link:focus {
    top: 1rem;
}

/* ---- En-tête et pied de page ---- */

.site-header {
    padding: 1.25rem 1rem 0;
    display: flex;
    justify-content: center;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text);
    font-weight: 650;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
    text-decoration: none;
}

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

.brand-icon {
    width: 1.75rem;
    height: 1.75rem;
    color: var(--accent);
}

.brand-icon-hole {
    fill: var(--bg);
}

.site-footer {
    margin-top: auto;
    padding: 2rem 1rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.site-footer p {
    margin: 0.2rem 0;
}

.site-footer a {
    color: inherit;
}

/* ---- Mise en page ---- */

.container {
    width: 100%;
    max-width: 40rem;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: clamp(1.25rem, 4vw, 2rem);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.card-centered {
    align-items: center;
    text-align: center;
}

h1 {
    margin: 0;
    font-size: clamp(1.4rem, 3.5vw, 1.7rem);
    line-height: 1.25;
    letter-spacing: -0.02em;
    font-weight: 680;
}

h2 {
    margin: 0 0 0.25rem;
    font-size: 0.95rem;
    font-weight: 650;
}

.lead {
    margin: -0.5rem 0 0;
    color: var(--text-muted);
}

/* ---- Formulaires ---- */

.form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    min-width: 0;
}

label {
    font-weight: 600;
    font-size: 0.95rem;
}

.optional {
    font-weight: 400;
    color: var(--text-muted);
}

input[type="text"],
input[type="password"],
select,
textarea {
    width: 100%;
    min-height: 2.75rem;
    padding: 0.6rem 0.8rem;
    font: inherit;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s, box-shadow 0.15s;
}

textarea {
    resize: vertical;
    min-height: 7rem;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

[aria-invalid="true"] {
    border-color: var(--danger) !important;
}

select {
    appearance: none;
    padding-right: 2.25rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.7rem center;
    background-size: 1.1rem;
    cursor: pointer;
}

.mono,
.secret-output {
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.secret-output {
    background: var(--surface-muted);
    white-space: pre-wrap;
    word-break: break-all;
}

.field-meta {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}

.counter {
    margin-left: auto;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.counter.is-over {
    color: var(--danger);
}

.hint {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.hint-warning {
    color: var(--warning-text);
}

.field-error {
    margin: 0;
    color: var(--danger);
    font-size: 0.85rem;
    font-weight: 500;
}

.grid-2 {
    display: grid;
    gap: 1.25rem;
}

@media (min-width: 36rem) {
    .grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-group > input {
    flex: 1;
    min-width: 0;
}

.options {
    margin: 0;
    padding: 0;
    border: 0;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.check {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    padding: 0.85rem 1rem;
    background: var(--surface-muted);
    border-radius: var(--radius-sm);
}

.check input {
    flex: none;
    width: 1.2rem;
    height: 1.2rem;
    margin: 0.15rem 0 0;
    accent-color: var(--accent);
    cursor: pointer;
}

.check input:disabled,
.check input:disabled + div label {
    cursor: not-allowed;
    opacity: 0.6;
}

.check label {
    cursor: pointer;
}

/* ---- Boutons ---- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 2.75rem;
    padding: 0.6rem 1.1rem;
    font: inherit;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    white-space: nowrap;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s, transform 0.05s;
}

.btn:active {
    transform: translateY(1px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-block {
    width: 100%;
}

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

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

.btn-secondary {
    background: var(--surface);
    border-color: var(--border-strong);
    color: var(--text);
}

.btn-secondary:hover {
    background: var(--surface-muted);
    color: var(--text);
}

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

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

@media (prefers-color-scheme: dark) {
    .btn-danger,
    .btn-danger:hover {
        color: #0e1014;
    }
}

.btn-ghost {
    background: transparent;
    border-color: var(--border-strong);
    color: var(--text-muted);
}

.btn-ghost:hover,
.btn-ghost[aria-pressed="true"] {
    color: var(--accent);
    border-color: var(--accent);
}

.btn-icon {
    padding: 0;
    width: 2.75rem;
    flex: none;
}

.btn-icon svg {
    width: 1.25rem;
    height: 1.25rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
}

.btn.is-copied {
    background: #2f9e44;
    border-color: #2f9e44;
    color: #ffffff;
}

/* ---- Alertes ---- */

.alert {
    padding: 0.8rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--info-border);
    background: var(--info-soft);
    font-size: 0.92rem;
}

.alert-error {
    border-color: var(--danger);
    background: var(--danger-soft);
}

.alert-warning {
    border-color: var(--warning-border);
    background: var(--warning-soft);
    color: var(--warning-text);
}

/* ---- Résultat ---- */

.qr {
    margin: 0 auto;
    padding: 0.75rem;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    line-height: 0;
}

.qr img {
    width: min(240px, 60vw);
    height: auto;
    image-rendering: pixelated;
}

.summary {
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

@media (min-width: 36rem) {
    .summary {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

.summary div {
    padding: 0.7rem 0.85rem;
    background: var(--surface-muted);
    border-radius: var(--radius-sm);
}

.summary dt {
    color: var(--text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.summary dd {
    margin: 0.15rem 0 0;
    font-weight: 600;
    font-size: 0.92rem;
    overflow-wrap: anywhere;
}

.revoke {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
}

.revoke summary {
    cursor: pointer;
    font-weight: 600;
}

.revoke[open] summary {
    margin-bottom: 0.75rem;
}

.revoke .hint {
    margin-bottom: 0.75rem;
}

/* ---- Fonctionnalités ---- */

.features {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
    color: var(--text-muted);
    font-size: 0.88rem;
}

@media (min-width: 36rem) {
    .features {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature h2 {
    color: var(--text);
}

.feature p {
    margin: 0;
}

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