:root {
    --bg: #f4f3f1;
    --bg-carbon: #16181c;
    --card: #ffffff;
    --texto: #1f2124;
    --texto-suave: #6b6f76;
    --borde: #e4e2df;
    --acento: #2f7d5e;      /* verde institucional */
    --acento-suave: #e7f2ec;
    --amarillo: #b8860b;
    --rojo: #b3413b;
    --radio: 14px;
    --sombra: 0 2px 10px rgba(0,0,0,0.05);
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--texto);
}

/* --- Navbar --- */
.navbar {
    background: var(--bg-carbon);
    color: #fff;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.navbar-fila { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.navbar-brand { color: #fff; font-weight: 700; letter-spacing: 1px; font-size: 20px; text-decoration: none; }
.navbar-menu { display: flex; align-items: center; justify-content: space-between; flex: 1; margin-left: 40px; }
.navbar-links { display: flex; gap: 22px; flex-wrap: wrap; }
.navbar-links a {
    color: #cfd2d6;
    text-decoration: none;
    font-size: 14px;
    padding: 6px 0;
    transition: color .2s ease;
}
.navbar-links a:hover { color: #fff; }
.navbar-user { display: flex; align-items: center; gap: 14px; font-size: 14px; color: #cfd2d6; }
.btn-logout {
    color: #fff;
    background: rgba(255,255,255,0.1);
    padding: 6px 12px;
    border-radius: 8px;
    text-decoration: none;
    transition: background .2s ease;
    white-space: nowrap;
}
.btn-logout:hover { background: rgba(255,255,255,0.2); }

/* Botón hamburguesa: oculto en escritorio */
.navbar-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}
.navbar-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform .25s ease, opacity .25s ease;
}
.navbar-toggle.activo span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-toggle.activo span:nth-child(2) { opacity: 0; }
.navbar-toggle.activo span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Layout --- */
.contenido { padding: 32px; max-width: 1100px; margin: 0 auto; }
h1 { margin-bottom: 4px; }
.texto-ayuda { color: var(--texto-suave); margin-top: 0; margin-bottom: 24px; }
.texto-nota { color: var(--texto-suave); font-size: 12px; margin-top: 10px; }

.card {
    background: var(--card);
    border: 1px solid var(--borde);
    border-radius: var(--radio);
    padding: 24px;
    box-shadow: var(--sombra);
    transition: transform .2s ease, box-shadow .2s ease;
}

/* --- Dashboard --- */
.grid-tarjetas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 28px; }
.tarjeta-resumen {
    background: var(--card);
    border: 1px solid var(--borde);
    border-radius: var(--radio);
    padding: 22px;
    box-shadow: var(--sombra);
    display: flex;
    flex-direction: column;
    transition: transform .2s ease;
}
.tarjeta-resumen:hover { transform: translateY(-3px); }
.tarjeta-alerta { border-color: var(--rojo); }
.tarjeta-numero { font-size: 32px; font-weight: 700; color: var(--acento); }
.tarjeta-alerta .tarjeta-numero { color: var(--rojo); }
.tarjeta-label { color: var(--texto-suave); font-size: 13px; margin-top: 4px; }

.accesos-rapidos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.acceso-card {
    text-align: center;
    text-decoration: none;
    color: var(--texto);
    font-weight: 600;
    padding: 26px 16px;
    cursor: pointer;
}
.acceso-card:hover { transform: translateY(-3px); box-shadow: 0 6px 18px rgba(0,0,0,0.08); }

/* --- Formularios --- */
label { display: block; font-size: 13px; font-weight: 600; color: var(--texto-suave); margin: 18px 0 6px; }
input, select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--borde);
    background: #fafafa;
    font-size: 14px;
    color: var(--texto);
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
input::placeholder { color: #a8abb1; }
input:hover, select:hover { border-color: #cfccc8; }
input:focus, select:focus {
    outline: none;
    border-color: var(--acento);
    background: #fff;
    box-shadow: 0 0 0 4px var(--acento-suave);
}
input[readonly] { background: #f0efed; color: var(--texto-suave); cursor: not-allowed; }
select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%236b6f76'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.17l3.71-3.94a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 36px;
    cursor: pointer;
}
.btn-primary {
    margin-top: 24px;
    width: 100%;
    background: var(--acento);
    color: #fff;
    border: none;
    padding: 13px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: .2px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(47,125,94,0.25);
    transition: transform .15s ease, background .2s ease, box-shadow .2s ease;
}
.btn-primary:hover { background: #256a4e; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(47,125,94,0.3); }
.btn-primary:active { transform: translateY(0); }
.btn-secundario {
    background: #fff;
    border: 1px solid var(--borde);
    padding: 11px 16px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 13px;
    color: var(--texto);
    cursor: pointer;
    transition: background .2s ease, border-color .2s ease, transform .15s ease;
}
.btn-secundario:hover { background: #f6f5f3; border-color: #cfccc8; transform: translateY(-1px); }
.btn-chico { padding: 7px 12px; font-size: 12px; }

/* --- Login --- */
.login-body { display: flex; align-items: center; justify-content: center; height: 100vh; background: var(--bg-carbon); }
.login-card { background: #fff; padding: 40px; border-radius: var(--radio); width: 340px; box-shadow: 0 10px 40px rgba(0,0,0,0.4); }
.login-card h1 { margin: 0; color: var(--acento); }
.subtitle { color: var(--texto-suave); margin-top: 4px; font-size: 14px; }
.alerta-error { background: #fbe9e7; color: var(--rojo); padding: 10px; border-radius: 8px; margin-top: 14px; font-size: 13px; }

/* --- Calculadora --- */
.grid-calculadora { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.resultado-fila { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--borde); font-size: 14px; }
.resultado-fila.destacado strong { color: var(--acento); font-size: 18px; }
.resultado-fila.positivo strong { color: var(--acento); }
.badge { display: inline-block; padding: 8px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; margin-top: 16px; }
.badge-verde { background: var(--acento-suave); color: var(--acento); }
.badge-amarillo { background: #fbf1dd; color: var(--amarillo); }
.badge-rojo { background: #fbe9e7; color: var(--rojo); }

/* --- Tablas --- */
.tabla { width: 100%; border-collapse: collapse; }
.tabla th { text-align: left; font-size: 12px; color: var(--texto-suave); text-transform: uppercase; padding: 10px; border-bottom: 2px solid var(--borde); }
.tabla td { padding: 12px 10px; border-bottom: 1px solid var(--borde); font-size: 14px; }
.tabla tr { transition: background .15s ease; }
.tabla tr:hover { background: #faf9f8; }
.vacio { text-align: center; color: var(--texto-suave); padding: 30px; }
.inline-form { display: inline; }
.select-estatus { padding: 6px 8px; font-size: 12px; width: auto; }

.cabecera-modulo { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }

/* --- Alertas de pagos --- */
.alerta-card { margin-bottom: 18px; }
.alerta-roja { border-left: 4px solid var(--rojo); }
.alerta-amarilla { border-left: 4px solid var(--amarillo); }
.alerta-card ul { margin: 8px 0 0; padding-left: 18px; font-size: 14px; }

/* --- Modal --- */
.modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); align-items: center; justify-content: center; }
.modal.activo { display: flex; }
.modal-contenido { background: #fff; padding: 28px; border-radius: var(--radio); width: 380px; max-height: 90vh; overflow-y: auto; }
.modal-botones { display: flex; gap: 10px; margin-top: 20px; }
.modal-botones .btn-primary { margin-top: 0; }

/* --- Animaciones --- */
.fade-in { animation: fadeIn .4s ease both; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Tabs de modo (rápido/manual, automático/manual) --- */
.tabs-modo {
    display: flex;
    gap: 6px;
    background: #eeece9;
    border-radius: 12px;
    padding: 5px;
    margin-top: 10px;
}
.tabs-chico { margin-top: 8px; margin-bottom: 12px; }
.tab-modo { flex: 1; }
.tab-modo input { display: none; }
.tab-modo span {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 12px;
    border-radius: 9px;
    font-size: 13px;
    font-weight: 600;
    color: var(--texto-suave);
    cursor: pointer;
    text-align: center;
    transition: background .2s ease, color .2s ease, box-shadow .2s ease;
}
.tab-modo span:hover { color: var(--texto); }
.tab-modo input:checked + span {
    background: #fff;
    color: var(--acento);
    box-shadow: 0 2px 6px rgba(0,0,0,0.10);
}
.texto-ayuda-chico { color: var(--texto-suave); font-size: 13px; margin: 10px 0 18px; line-height: 1.4; }
.campos-manual { border-top: 1px dashed var(--borde); margin-top: 18px; padding-top: 12px; }

/* --- Parámetros IMSS --- */
.form-parametros { margin-bottom: 18px; }
.form-parametros h2 { margin-top: 0; font-size: 16px; }
.grid-parametros { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.grid-parametros label { margin: 0 0 4px; }
.alerta-verde { border-left: 4px solid var(--acento); color: var(--acento); font-weight: 600; font-size: 14px; }

/* --- Tablas: scroll horizontal en vez de romper el layout --- */
.card:has(table) {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.tabla { min-width: 560px; }

/* ============================================================
   RESPONSIVE — tablet y celular
   ============================================================ */
@media (max-width: 860px) {
    .grid-tarjetas { grid-template-columns: repeat(2, 1fr); }
    .accesos-rapidos { grid-template-columns: repeat(2, 1fr); }
    .grid-calculadora { grid-template-columns: 1fr; }
    .grid-parametros { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    /* Navbar → menú hamburguesa */
    .navbar { padding: 0 16px; }
    .navbar-toggle { display: flex; }
    .navbar-menu {
        display: none;
        flex-direction: column;
        align-items: stretch;
        margin: 0 -16px;
        padding: 10px 16px 16px;
        gap: 4px;
        background: var(--bg-carbon);
        border-top: 1px solid rgba(255,255,255,0.08);
    }
    .navbar-menu.activo { display: flex; }
    .navbar-links { flex-direction: column; gap: 2px; }
    .navbar-links a { padding: 12px 4px; font-size: 15px; border-bottom: 1px solid rgba(255,255,255,0.06); }
    .navbar-user {
        justify-content: space-between;
        margin-top: 10px;
        padding-top: 10px;
        border-top: 1px solid rgba(255,255,255,0.08);
    }
    .navbar-nombre { font-size: 13px; }

    /* Layout general */
    .contenido { padding: 18px 16px 40px; }
    h1 { font-size: 22px; }

    /* Grids a una columna */
    .grid-tarjetas { grid-template-columns: 1fr; gap: 12px; }
    .accesos-rapidos { grid-template-columns: 1fr; gap: 12px; }
    .grid-parametros { grid-template-columns: 1fr; }
    .card { padding: 18px; }

    .cabecera-modulo { flex-direction: column; align-items: stretch; gap: 12px; }
    .cabecera-modulo .btn-primary { margin-top: 0; }

    /* Formularios: evita el zoom automático de iOS (mínimo 16px) y botones táctiles más grandes */
    input, select, button, .btn-primary, .btn-secundario {
        font-size: 16px;
    }
    .btn-chico { font-size: 13px; }
    .btn-primary, .btn-secundario { padding: 13px 16px; }
    label { margin: 16px 0 6px; }

    /* Modal ocupa casi toda la pantalla en vez de un ancho fijo */
    .modal { padding: 16px; }
    .modal-contenido { width: 100%; max-width: 420px; padding: 22px; }
    .modal-botones { flex-direction: column-reverse; }
    .modal-botones button { width: 100%; }

    /* Login */
    .login-card { width: 100%; max-width: 340px; padding: 30px 24px; }

    /* Tarjetas resumen y accesos rápidos más cómodos al tacto */
    .tarjeta-numero { font-size: 28px; }
    .acceso-card { padding: 20px 14px; font-size: 15px; }

    /* Tablas: se deja el scroll horizontal (definido arriba) y se compactan celdas */
    .tabla th, .tabla td { padding: 10px 8px; font-size: 13px; }
    .tabla { min-width: 520px; }
}