/* ==========================================================================
   IEM Preinscripciones — Hoja de estilos base
   Design tokens derivados de la marca IEM (Institut d'Estudis Mèdics).
   Estilo plano (sin sombras), esquinas sutiles, fondo blanco.
   ========================================================================== */

:root {
    /* --- Paleta de marca --- */
    --color-accent: #A11600;        /* rojo IEM dominante (acciones, marca) */
    --color-accent-dark: #7d1100;
    --color-accent-hover: #8a1300;
    --color-secondary: #FFA6A6;     /* rojo claro secundario */
    --color-secondary-soft: #ffeaea;
    --color-text: #525252;          /* gris de texto base */
    --color-text-strong: #2f2f2f;
    --color-muted: #8a8a8a;
    --color-bg: #ffffff;            /* fondo blanco */
    --color-surface: #ffffff;
    --color-surface-alt: #fafafa;
    --color-border: #e3e3e3;

    /* --- Estados --- */
    --color-success: #1e7d4f;
    --color-success-bg: #e7f6ee;
    --color-error: #A11600;
    --color-error-bg: #fdecea;
    --color-warning: #9a6700;
    --color-warning-bg: #fff6e0;
    --color-info: #525252;
    --color-info-bg: #f0f0f0;

    /* --- Tipografía --- */
    --font-base: Helvetica, Arial, "Helvetica Neue", sans-serif;

    /* --- Esquinas sutiles, sin sombras --- */
    --radius-sm: 3px;
    --radius: 5px;
    --radius-lg: 8px;
    --shadow: none;

    /* --- Espaciado --- */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-8: 48px;

    --container: 1080px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.55;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    color: var(--color-text-strong);
    line-height: 1.2;
    margin: 0 0 var(--space-3);
    font-weight: 700;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.2rem; }

a {
    color: var(--color-accent);
    text-decoration: none;
}
a:hover { text-decoration: underline; }

p { margin: 0 0 var(--space-3); }

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* --- Cabecera / navegación --- */
.site-header {
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    gap: var(--space-4);
}
.brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 700;
    color: var(--color-accent);
    font-size: 1.2rem;
}
.brand img { height: 40px; width: auto; display: block; }
.nav { display: flex; align-items: center; gap: var(--space-4); }
.nav a { color: var(--color-text); font-weight: 500; }
.nav a:hover { color: var(--color-accent); text-decoration: none; }

/* --- Selector de idioma --- */
.lang-switch { display: flex; gap: var(--space-1); align-items: center; }
.lang-switch a {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--color-muted);
    padding: 2px 4px;
    border-radius: var(--radius-sm);
}
.lang-switch a.active { color: var(--color-accent); font-weight: 700; }

/* --- Botones --- */
.btn {
    display: inline-block;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    padding: 10px 18px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    text-align: center;
    transition: background-color .15s ease, border-color .15s ease;
}
.btn-primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn-primary:hover { background: var(--color-accent-hover); text-decoration: none; }
.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}
.btn-outline:hover { background: var(--color-secondary-soft); text-decoration: none; }
.btn-ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn-block { display: block; width: 100%; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* --- Formularios --- */
.form-group { margin-bottom: var(--space-4); }
label {
    display: block;
    margin-bottom: var(--space-1);
    font-weight: 600;
    color: var(--color-text-strong);
    font-size: 0.92rem;
}
.input, input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="date"], input[type="tel"], select, textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    color: var(--color-text-strong);
    background: var(--color-surface);
}
.input:focus, input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-secondary-soft);
}
.checkbox-row { display: flex; align-items: flex-start; gap: var(--space-2); }
.checkbox-row input { width: auto; margin-top: 4px; }
.field-hint { font-size: 0.82rem; color: var(--color-muted); margin-top: var(--space-1); }

/* --- Tarjetas --- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}
.card + .card { margin-top: var(--space-4); }

/* --- Layout de autenticación --- */
.auth-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
    background: var(--color-surface-alt);
}
.auth-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
}
.auth-card .brand { justify-content: center; margin-bottom: var(--space-4); }
.auth-links { margin-top: var(--space-4); font-size: 0.9rem; text-align: center; }

/* --- Badges / roles --- */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--color-secondary-soft);
    color: var(--color-accent);
}

/* --- Hero / página de inicio --- */
.hero { padding: var(--space-8) 0; text-align: center; }
.hero h1 { font-size: 2.4rem; }
.hero p { font-size: 1.15rem; color: var(--color-text); max-width: 640px; margin: 0 auto var(--space-5); }
.hero-actions { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-4); padding: var(--space-6) 0; }

/* --- Footer --- */
.site-footer {
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-8);
    padding: var(--space-5) 0;
    color: var(--color-muted);
    font-size: 0.88rem;
}

/* --- Página de error --- */
.error-page { text-align: center; padding: var(--space-8) 0; }
.error-page .code { font-size: 4rem; color: var(--color-accent); font-weight: 700; }

/* ==========================================================================
   Toasts — zona superior central
   ========================================================================== */
.toast-container {
    position: fixed;
    top: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    width: min(440px, calc(100vw - 32px));
}
.toast {
    border-radius: var(--radius);
    padding: 12px 16px;
    font-size: 0.95rem;
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    animation: toast-in .2s ease;
}
.toast-success { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success); }
.toast-error { background: var(--color-error-bg); color: var(--color-error); border-color: var(--color-error); }
.toast-warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: var(--color-warning); }
.toast-info { background: var(--color-info-bg); color: var(--color-info); border-color: var(--color-border); }
.toast button { background: none; border: none; cursor: pointer; color: inherit; font-size: 1.1rem; line-height: 1; margin-left: auto; }

@keyframes toast-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Accesibilidad: enlace "saltar al contenido" --- */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--color-accent);
    color: #fff;
    padding: 8px 14px;
    border-radius: 0 0 var(--radius) 0;
    z-index: 1100;
}
.skip-link:focus { left: 0; text-decoration: none; }

/* --- Subnavegación de administración --- */
.admin-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-5);
}
.admin-nav a {
    padding: 8px 14px;
    color: var(--color-text);
    font-weight: 600;
    font-size: 0.92rem;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
}
.admin-nav a:hover { color: var(--color-accent); text-decoration: none; }
.admin-nav a.active { color: var(--color-accent); border-bottom-color: var(--color-accent); }

/* --- Tablas de datos --- */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); font-size: 0.92rem; }
.data-table th { color: var(--color-muted); font-weight: 600; }
.data-table .actions-cell { display: flex; gap: var(--space-2); }
.btn-sm { padding: 5px 10px; font-size: 0.82rem; }

/* --- Pestañas de idioma en formularios multiidioma --- */
.locale-tabs { display: flex; gap: var(--space-1); margin-bottom: var(--space-2); }
.locale-tabs button {
    border: 1px solid var(--color-border); background: var(--color-surface-alt); color: var(--color-text);
    padding: 4px 12px; border-radius: var(--radius-sm); cursor: pointer; font: inherit; text-transform: uppercase; font-size: 0.78rem;
}
.locale-tabs button.active { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.locale-pane { display: none; }
.locale-pane.active { display: block; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); flex-wrap: wrap; }

/* --- Utilidades --- */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.text-center { text-align: center; }
.text-muted { color: var(--color-muted); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.info-table { width: 100%; border-collapse: collapse; }
.info-table th, .info-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); }
.info-table th { color: var(--color-muted); font-weight: 600; width: 45%; }

@media (max-width: 640px) {
    .grid-2 { grid-template-columns: 1fr; }
    .nav { gap: var(--space-2); }
    .hero h1 { font-size: 1.8rem; }
}