/* ============================================================
   Sistema TEA — Estilos accesibles WCAG 2.1 AA
   ============================================================ */

/* ---- Variables ---- */
:root {
    --color-primary:       #1d4ed8;
    --color-primary-dark:  #1e3a8a;
    --color-primary-light: #dbeafe;
    --color-success:       #15803d;
    --color-success-bg:    #dcfce7;
    --color-error:         #b91c1c;
    --color-error-bg:      #fee2e2;
    --color-warning:       #92400e;
    --color-warning-bg:    #fef3c7;
    --color-info:          #1e40af;
    --color-info-bg:       #dbeafe;
    --color-text:          #111827;
    --color-text-muted:    #374151;
    --color-border:        #d1d5db;
    --color-bg:            #f9fafb;
    --color-surface:       #ffffff;
    --color-nav-bg:        #1e3a8a;
    --color-nav-text:      #ffffff;
    --font-size-base:      1rem;       /* 16px */
    --font-size-sm:        0.875rem;
    --font-size-lg:        1.125rem;
    --line-height:         1.6;
    --radius:              0.375rem;
    --shadow:              0 1px 3px rgba(0,0,0,.12);
    --shadow-md:           0 4px 12px rgba(0,0,0,.15);
    --transition:          150ms ease;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; }

html {
    font-size: 100%;  /* respeta preferencia del usuario */
    scroll-behavior: smooth;
}

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

body {
    margin: 0;
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background: var(--color-bg);
}

/* ---- Skip link (accesibilidad) ---- */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: #fff;
    padding: 0.5rem 1rem;
    font-weight: bold;
    text-decoration: none;
    z-index: 1000;
    border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
    top: 0;
}

/* ---- Screen reader only ---- */
.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;
}

/* ---- Focus visible ---- */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
}
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* ---- Header ---- */
.site-header {
    background: var(--color-nav-bg);
    color: var(--color-nav-text);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    min-height: 3.5rem;
    flex-wrap: wrap;
}

.site-header__brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-lg);
    font-weight: 700;
    white-space: nowrap;
}

.site-nav { flex: 1; }
.site-nav__list {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}
.site-nav__link {
    display: block;
    padding: 0.5rem 0.875rem;
    color: rgba(255,255,255,.85);
    text-decoration: none;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
}
.site-nav__link:hover,
.site-nav__link:focus-visible {
    background: rgba(255,255,255,.15);
    color: #fff;
}
.site-nav__link--active {
    background: rgba(255,255,255,.2);
    color: #fff;
    font-weight: 700;
}

.site-header__user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-sm);
    white-space: nowrap;
    flex-wrap: wrap;
}

/* ---- Badge de rol ---- */
.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .03em;
}
.badge--role  { background: rgba(255,255,255,.25); color: #fff; }
.badge--admin  { background: #7c3aed; color: #fff; }
.badge--editor { background: #059669; color: #fff; }
.badge--invitado { background: #6b7280; color: #fff; }

/* ---- Main content ---- */
.main-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* ---- Footer ---- */
.site-footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    border-top: 1px solid var(--color-border);
    margin-top: 3rem;
}

/* ---- Flash messages ---- */
.flash-container { margin-bottom: 1.5rem; }
.flash {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    border: 1px solid currentColor;
    margin-bottom: 0.5rem;
    font-size: var(--font-size-base);
}
.flash__icon { font-weight: bold; flex-shrink: 0; }
.flash--success { background: var(--color-success-bg); color: var(--color-success); }
.flash--error   { background: var(--color-error-bg);   color: var(--color-error); }
.flash--warning { background: var(--color-warning-bg); color: var(--color-warning); }
.flash--info    { background: var(--color-info-bg);    color: var(--color-info); }

/* ---- Cards ---- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 1.25rem;
    color: var(--color-text);
}

/* ---- Formularios ---- */
.form-group {
    margin-bottom: 1.25rem;
}
.form-group label,
.form-label {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-bottom: 0.375rem;
    color: var(--color-text);
}
.form-label .required {
    color: var(--color-error);
    margin-left: 0.2em;
    aria-hidden: true;
}
.form-control {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}
.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(29,78,216,.25);
    outline: none;
}
.form-control:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}
.form-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}
.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: 0.25rem;
    font-weight: 500;
}

/* Checkboxes y radios accesibles */
.checkbox-group, .radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.checkbox-item, .radio-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}
.checkbox-item input[type="checkbox"],
.radio-item input[type="radio"] {
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--color-primary);
    cursor: pointer;
    flex-shrink: 0;
}
.checkbox-item label,
.radio-item label {
    font-weight: 400;
    margin-bottom: 0;
    cursor: pointer;
}

/* Grid de formulario */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem 1.5rem;
}

/* ---- Botones ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem 1.25rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.5;
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
    white-space: nowrap;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn--primary  { background: #16a34a; color: #fff; border-color: #16a34a; }
.btn--primary:hover:not(:disabled) { background: #15803d; border-color: #15803d; }
.btn--danger   { background: var(--color-error); color: #fff; border-color: var(--color-error); }
.btn--danger:hover:not(:disabled)  { background: #991b1b; border-color: #991b1b; }
.btn--ghost    { background: transparent; color: var(--color-nav-text); border-color: rgba(255,255,255,.5); }
.btn--ghost:hover:not(:disabled)   { background: rgba(255,255,255,.1); }
.btn--outline  { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn--outline:hover:not(:disabled) { background: var(--color-primary-light); }
.btn--secondary{ background: #dc2626; color: #fff; border-color: #dc2626; }
.btn--secondary:hover:not(:disabled){ background: #b91c1c; border-color: #b91c1c; }
.btn--sm       { padding: 0.25rem 0.75rem; font-size: var(--font-size-sm); }
.btn--lg       { padding: 0.75rem 1.75rem; font-size: var(--font-size-lg); }

.btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

/* ---- Tablas ---- */
.table-wrapper {
    overflow-x: auto;
    margin-bottom: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    background: var(--color-surface);
}
.table caption {
    padding: 0.75rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: left;
    caption-side: top;
}
.table th {
    background: #f3f4f6;
    color: var(--color-text);
    font-weight: 700;
    text-align: left;
    padding: 0.75rem 1rem;
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}
.table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: #f9fafb; }
.table .actions { white-space: nowrap; }

/* ---- Login page ---- */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1e3a8a 100%);
    padding: 1rem;
}
.login-card {
    background: var(--color-surface);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 420px;
}
.login-logo {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 0.5rem;
}
.login-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 1.75rem;
    color: var(--color-primary-dark);
}

/* ---- Dashboard stats ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
}
.stat-card__number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}
.stat-card__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* ---- Page heading ---- */
.page-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.page-heading h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

/* ---- Comorbilidades: agregar inline ---- */
.comorbidity-add {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}
.comorbidity-add input { flex: 1; }

/* ---- Status badge ---- */
.status-badge {
    display: inline-block;
    padding: 0.15rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
}
.status-badge--active   { background: #d1fae5; color: #065f46; }
.status-badge--inactive { background: #fee2e2; color: #991b1b; }

/* ---- Nivel TEA badge ---- */
.nivel-badge { display: inline-block; padding: .15rem .55rem; border-radius: 9999px; font-size: .75rem; font-weight: 700; }
.nivel-badge--1 { background: #d1fae5; color: #065f46; }
.nivel-badge--2 { background: #fef3c7; color: #78350f; }
.nivel-badge--3 { background: #fee2e2; color: #991b1b; }

/* ---- Responsive ---- */
@media (max-width: 640px) {
    .site-header { padding: 0.75rem 1rem; flex-direction: column; align-items: flex-start; }
    .main-content { padding: 1rem; }
    .form-grid { grid-template-columns: 1fr; }
    .page-heading { flex-direction: column; }
}

/* ---- High contrast mode ---- */
@media (forced-colors: active) {
    .btn, .form-control, .badge, .status-badge { forced-color-adjust: none; }
}