/* =====================================================================
   estilos.css — Referencias Bancarias · ITPA / TecNM
   Rediseño institucional. Azul marino TecNM + acento dorado del engrane.
   Type: Fraunces (display institucional) + Inter (cuerpo y datos).
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700&display=swap');

:root {
    /* Azules institucionales TecNM */
    --marino-950: #0a1a33;
    --marino-900: #10294c;
    --marino-800: #16386a;
    --marino-600: #23528f;
    --marino-100: #e7eef7;
    --marino-050: #f4f8fd;

    /* Oro del engrane */
    --oro-600: #c1841f;
    --oro-500: #d99a2b;
    --oro-100: #fbf1dc;

    --verde-600: #1f8a5b;
    --rojo-600:  #b83227;

    --tinta:   #14202f;
    --gris-600:#57627a;
    --gris-400:#8a93a6;
    --gris-200:#dbe0ea;
    --gris-100:#eef1f6;
    --papel:   #f6f8fc;
    --blanco:  #ffffff;

    --sombra-sm: 0 1px 2px rgba(16, 41, 76, .06);
    --sombra-md: 0 14px 40px rgba(16, 41, 76, .10);
    --sombra-lg: 0 30px 70px rgba(16, 41, 76, .16);

    --radio: 16px;
    --radio-sm: 10px;
    --ancho: 660px;

    --borde: 1px solid var(--gris-200);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--tinta);
    background:
        radial-gradient(1100px 520px at 12% -12%, rgba(35,82,143,.14), transparent 60%),
        radial-gradient(820px 460px at 112% 6%, rgba(217,154,43,.10), transparent 55%),
        linear-gradient(180deg, #eef2f8 0%, #e5ebf4 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 48px 16px 72px;
    -webkit-font-smoothing: antialiased;
}

/* ---------- Marca institucional ---------- */
.marca {
    width: 100%;
    max-width: var(--ancho);
    display: flex;
    align-items: center;
    gap: 18px;
    margin: 0 auto 22px;
}
.marca img { display: block; width: auto; }
.marca .logo-itpa  { height: 46px; }
.marca .logo-tecnm { height: 50px; }
.marca .sep { width: 1px; height: 42px; background: var(--gris-200); }
.marca .txt { line-height: 1.2; margin-left: 2px; }
.marca .txt strong {
    display: block;
    font-family: 'Fraunces', Georgia, serif;
    font-size: 15px;
    font-weight: 600;
    color: var(--marino-900);
    letter-spacing: .01em;
}
.marca .txt span {
    font-size: 12px;
    color: var(--gris-600);
    letter-spacing: .04em;
    text-transform: uppercase;
}

/* ---------- Tarjeta ---------- */
.group {
    width: 100%;
    max-width: var(--ancho);
    margin: 0 auto;
    background: var(--blanco);
    border: var(--borde);
    border-radius: var(--radio);
    box-shadow: var(--sombra-md);
    overflow: hidden;
    animation: subir .55s cubic-bezier(.16,.84,.44,1) both;
    flex-shrink: 0; /* Agrega esta línea para evitar recortes */
}
@keyframes subir {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Cabecera de tarjeta: bloque marino con filete dorado */
.group::before {
    content: "";
    display: block;
    height: 5px;
    background: linear-gradient(90deg, var(--marino-900) 0%, var(--marino-600) 60%, var(--oro-500) 100%);
}
.group::after { content: ""; display: block; height: 30px; }

.group > *:not(form):not(.tabla-wrap) { padding-left: 40px; padding-right: 40px; }
.group form,
.group .tabla-wrap { margin-left: 40px; margin-right: 40px; }

/* ---------- Encabezado interno ---------- */
.encabezado {
    text-align: center;
    padding-top: 30px;
    padding-bottom: 4px;
}
.encabezado .eyebrow {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--oro-600);
    margin-bottom: 10px;
}

h2 {
    margin: 0 40px 6px;
    font-family: 'Fraunces', Georgia, serif;
    font-size: 27px;
    font-weight: 600;
    line-height: 1.15;
    text-align: center;
    color: var(--marino-900);
    letter-spacing: -.01em;
}
h2 em { font-style: normal; }

h3 { margin: 4px 0; font-size: 16px; font-weight: 600; color: var(--tinta); text-align: center; }
h3 em { font-style: normal; }

.subtitulo {
    text-align: center;
    color: var(--gris-600);
    font-size: 15px;
    margin: 0 40px 24px;
}

/* ---------- Formulario ---------- */
form { margin-top: 8px; }

label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--marino-800);
    letter-spacing: .06em;
    text-transform: uppercase;
    margin: 8px 0 8px;
}

input[type="text"],
.form-input {
    width: 100%;
    padding: 15px 16px;
    font-family: 'Inter', inherit;
    font-size: 17px;
    color: var(--tinta);
    background: var(--marino-050);
    border: 1.5px solid var(--gris-200);
    border-radius: var(--radio-sm);
    outline: none;
    transition: border-color .18s, box-shadow .18s, background .18s;
    letter-spacing: .06em;
    font-variant-numeric: tabular-nums;
}
input[type="text"]::placeholder { color: var(--gris-400); letter-spacing: normal; }
input[type="text"]:focus,
.form-input:focus {
    border-color: var(--marino-600);
    background: var(--blanco);
    box-shadow: 0 0 0 4px rgba(35,82,143,.14);
}

/* ---------- Bloques de trámite (portada) ---------- */
.bloque-tramite {
    margin: 18px 40px 4px;
    padding: 20px 22px 22px;
    background: var(--marino-050);
    border: 1px solid var(--marino-100);
    border-radius: var(--radio-sm);
}
.bloque-tramite__cab {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 6px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--marino-100);
}
.bloque-tramite__etq {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--marino-900);
}
.bloque-tramite__nota {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--oro-600);
}
.bloque-tramite form { margin-top: 4px; }
.bloque-tramite .acciones { margin-top: 16px; }
.bloque-tramite .form-btn { width: 100%; margin: 0; }

/* Separador "o" entre trámites */
.separador {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 22px 40px;
    color: var(--gris-400);
    font-size: 12px;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.separador::before,
.separador::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--gris-200);
}

/* ---------- Botones ---------- */
.acciones { text-align: center; margin-top: 22px; }

.form-btn,
input[type="submit"],
input[type="button"] {
    -webkit-appearance: none;
    appearance: none;
    display: inline-block;
    margin: 6px 5px 0;
    padding: 13px 30px;
    font-family: 'Inter', inherit;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .01em;
    color: var(--blanco);
    background: var(--marino-900);
    border: 1.5px solid var(--marino-900);
    border-radius: var(--radio-sm);
    cursor: pointer;
    transition: transform .12s, box-shadow .18s, background .18s, border-color .18s;
    box-shadow: var(--sombra-sm);
}
.form-btn:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
    background: var(--marino-800);
    border-color: var(--marino-800);
    box-shadow: 0 10px 24px rgba(16,41,76,.26);
    transform: translateY(-1px);
}
.form-btn:active { transform: translateY(0); box-shadow: var(--sombra-sm); }
.form-btn:focus-visible,
input:focus-visible { outline: 3px solid rgba(217,154,43,.6); outline-offset: 2px; }

/* Secundario (Atrás) */
input[name="atras"],
input[value="Atrás"] {
    color: var(--marino-900);
    background: var(--blanco);
    border-color: var(--gris-200);
    box-shadow: none;
}
input[name="atras"]:hover,
input[value="Atrás"]:hover {
    background: var(--gris-100);
    border-color: var(--marino-600);
    color: var(--marino-900);
}

/* ---------- Tablas ---------- */
.tabla-wrap { margin-top: 6px; margin-bottom: 6px; }

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 8px 0 4px;
    font-size: 14.5px;
    border: var(--borde);
    border-radius: var(--radio-sm);
    overflow: hidden;
    box-shadow: var(--sombra-sm);
    background: var(--blanco);
}
table thead th {
    background: var(--marino-900);
    color: var(--blanco);
    font-weight: 600;
    font-size: 11.5px;
    letter-spacing: .06em;
    text-transform: uppercase;
    padding: 12px;
    text-align: center;
    border: none;
}
table tbody td {
    padding: 14px 12px;
    text-align: center;
    border-top: 1px solid var(--gris-100);
    color: var(--tinta);
}
table tbody tr:nth-child(even) td { background: var(--marino-050); }
table tbody tr:hover td { background: var(--oro-100); }
table td:nth-child(2) { white-space: nowrap; font-variant-numeric: tabular-nums; font-weight: 600; }
table td:nth-child(3) { font-variant-numeric: tabular-nums; letter-spacing: .04em; font-weight: 500; }

/* ---------- Bloque de convenio ---------- */
.convenio {
    margin: 22px 40px 8px;
    padding: 16px 18px;
    background: var(--marino-050);
    border: 1px solid var(--marino-100);
    border-left: 4px solid var(--oro-500);
    border-radius: var(--radio-sm);
    text-align: center;
}
.convenio h3 { color: var(--marino-900); margin: 2px 0; }
.convenio h3 .num { font-variant-numeric: tabular-nums; letter-spacing: .04em; }
.convenio .nombre {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--tinta);
    margin-top: 4px;
}

/* Aviso inglés */
.aviso {
    margin: 18px 40px;
    padding: 14px 18px;
    background: var(--oro-100);
    border: 1px solid #edddb7;
    border-left: 4px solid var(--oro-500);
    border-radius: var(--radio-sm);
    color: #7a5610;
    font-size: 14px;
    text-align: center;
}

/* ---------- Pie de pago ---------- */
.pago {
    margin: 26px 40px 4px;
    padding: 22px;
    background: var(--marino-050);
    border: 1px solid var(--marino-100);
    border-radius: var(--radio-sm);
    text-align: center;
    color: var(--gris-600);
    font-size: 14px;
}
.pago .banco-linea {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}
.pago img { max-width: 150px; height: auto; }
.pago strong { color: var(--marino-900); font-weight: 600; }

/* ---------- Página de error ---------- */
.estado-error { text-align: center; padding-top: 22px; }
.estado-error .icono {
    width: 70px; height: 70px; margin: 12px auto 14px;
    display: flex; align-items: center; justify-content: center;
    background: #fbe9e7; color: var(--rojo-600);
    border-radius: 50%; font-size: 34px; font-weight: 700;
    font-family: 'Fraunces', serif;
}
.estado-error h2 { color: var(--rojo-600); }

/* ---------- Nota al pie legal ---------- */
.pie-legal {
    width: 100%;
    max-width: var(--ancho);
    margin: 20px auto 0;
    text-align: center;
    font-size: 12px;
    color: var(--gris-400);
    letter-spacing: .02em;
}

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
    body { padding: 28px 12px 44px; }
    .marca { gap: 12px; }
    .marca .txt span { display: none; }
    .group > *:not(form):not(.tabla-wrap) { padding-left: 22px; padding-right: 22px; }
    .group form, .group .tabla-wrap,
    h2, .subtitulo, .convenio, .aviso, .pago,
    .bloque-tramite, .separador { margin-left: 22px; margin-right: 22px; }
    h2 { font-size: 23px; }
    table { font-size: 13px; }
    table thead th, table tbody td { padding: 10px 8px; }
    .form-btn, input[type="submit"], input[type="button"] { width: 100%; margin: 8px 0 0; }
}

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