/**
 * Styles communs partagés entre les pages admin et setup.
 * Variables, reset, base, formulaires, boutons, focus, reduced motion.
 */

/* ===== Variables ===== */
:root {
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-danger: #dc2626;
    --color-danger-hover: #b91c1c;
    /* #15803d : 5.00:1 sur blanc — conforme WCAG AA pour texte normal et fond de bouton */
    --color-success: #15803d;
    --color-warning: #d97706;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #f9fafb;
    --color-white: #ffffff;
    --color-border: #e5e7eb;
    /* #2563eb (primary) : 5.17:1 sur blanc — assure 3:1 minimum WCAG 1.4.11 sur le focus */
    --color-border-focus: #2563eb;
    --radius: 8px;
    --radius-sm: 4px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: 0.2s ease;
}

/* ===== Reset ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ===== Base ===== */
html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== Formulaires ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-group--inline {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
}

.form-group--checkbox {
    flex-direction: row;
    align-items: center;
}

.form-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
}

.form-required {
    color: var(--color-danger);
}

.form-input,
.form-select {
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-white);
    transition: border-color var(--transition), box-shadow var(--transition);
    width: 100%;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.4);
}

.form-input--error {
    border-color: var(--color-danger);
}

.form-input--error:focus {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.4);
}

.form-error {
    color: var(--color-danger);
    font-size: 0.8rem;
    font-weight: 500;
    margin: 0;
    line-height: 1.4;
}

.form-textarea {
    resize: vertical;
    min-height: 4rem;
}

.form-color {
    width: 3rem;
    height: 2.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0.15rem;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
}

.form-checkbox input[type="checkbox"] {
    width: 1.15rem;
    height: 1.15rem;
    accent-color: var(--color-primary);
    cursor: pointer;
}

/* 0.875rem = 14px : taille minimale lisible pour un texte d'aide
   informatif sous un champ de formulaire (cf. M5 audit a11y) */
.form-help {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

.form-info {
    font-size: 0.875rem;
    color: var(--color-text-light);
    padding: 0.75rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
}

.form-info code {
    font-weight: 600;
    color: var(--color-text);
}

.form-info__note {
    display: block;
    font-size: 0.8rem;
    font-style: italic;
    margin-top: 0.25rem;
}

.form-info--success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

/* ===== Boutons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.6rem 1.15rem;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

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

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

.btn--secondary:hover {
    background: var(--color-border);
}

.btn--outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn--outline:hover {
    background: var(--color-bg);
}

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

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

.btn--small {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

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

/* ===== Focus visible ===== */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Retirer l'outline par défaut pour les clics souris */
:focus:not(:focus-visible) {
    outline: none;
}

/* Skip link : invisible par défaut, visible au focus clavier (WCAG 2.4.1) */
.skip-link {
    position: absolute;
    top: 0;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 0.75rem 1rem;
    text-decoration: none;
    font-weight: 600;
    border-bottom-right-radius: var(--radius-sm);
    transform: translateY(-100%);
    transition: transform var(--transition);
    z-index: 10000;
}

.skip-link:focus {
    transform: translateY(0);
    outline: 2px solid var(--color-white);
    outline-offset: -4px;
}

/* Contenu masqué visuellement mais lisible par les lecteurs d'écran */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}