/**
 * Login de la plataforma de facturación: tarjeta de dos paneles (marca + formulario),
 * con identidad propia frente al login del académico.
 */

:root {
    --login-marino: #0f2742;
    --login-marino-2: #1d4f86;
    --login-acento: #38bdf8;
    --login-primario: #1d4f86;
    --login-primario-hover: #163f6c;
    --login-fondo: #eef2f7;
    --login-texto: #1e293b;
    --login-texto-suave: #64748b;
    --login-borde: #d8dee8;
}

body {
    min-height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    color: var(--login-texto);
    background-color: var(--login-fondo);
    background-image:
        radial-gradient(circle at 12% 18%, rgba(56, 189, 248, 0.16) 0, transparent 38%),
        radial-gradient(circle at 88% 82%, rgba(29, 79, 134, 0.16) 0, transparent 42%),
        radial-gradient(rgba(15, 39, 66, 0.07) 1px, transparent 1px);
    background-size: auto, auto, 22px 22px;
}

.login-shell {
    width: 100%;
    max-width: 980px;
    min-height: 560px;
    display: grid;
    grid-template-columns: 5fr 6fr;
    background: #FFFFFF;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(15, 39, 66, 0.18), 0 2px 6px rgba(15, 39, 66, 0.06);
    animation: aparecer 0.5s ease-out;
}

@keyframes aparecer {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------------------------------------------------------------- panel de marca */
.login-brand {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 2rem;
    padding: 2.5rem 2.25rem;
    color: #FFFFFF;
    background: linear-gradient(155deg, var(--login-marino) 0%, var(--login-marino-2) 100%);
    overflow: hidden;
}

.login-brand::before,
.login-brand::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.login-brand::before {
    width: 340px;
    height: 340px;
    right: -150px;
    top: -120px;
    border: 46px solid rgba(255, 255, 255, 0.05);
}

.login-brand::after {
    width: 220px;
    height: 220px;
    left: -90px;
    bottom: -90px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.28) 0%, transparent 70%);
}

.login-brand > * {
    position: relative;
    z-index: 1;
}

.brand-top {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    width: 52px;
    height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #FFFFFF;
    border-radius: 14px;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}

.brand-logo img {
    height: 40px;
}

.brand-institucion {
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
}

.brand-etiqueta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--login-acento);
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.35);
}

.brand-body h1 {
    margin: 1rem 0 0.75rem;
    font-size: 2.1rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.01em;
}

.brand-body > p {
    margin: 0 0 1.75rem;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.98rem;
}

.brand-lista {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.85rem;
}

.brand-lista li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.88);
}

.brand-lista i {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-size: 1rem;
    color: var(--login-acento);
    background: rgba(255, 255, 255, 0.08);
}

.brand-pie {
    margin: 0;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.55);
}

/* ---------------------------------------------------------------- panel del formulario */
.login-panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem 3.5rem;
}

.login-panel-cabecera {
    margin-bottom: 2rem;
}

.login-panel-cabecera h2 {
    margin: 0 0 0.35rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--login-marino);
}

.login-panel-cabecera p {
    margin: 0;
    color: var(--login-texto-suave);
}

#btn_login {
    height: 54px;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: #FFFFFF;
    background: var(--login-primario);
    transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

#btn_login i {
    font-size: 1.4rem;
    vertical-align: middle;
    transition: transform 0.2s ease;
}

#btn_login:hover,
#btn_login:focus-visible {
    background: var(--login-primario-hover);
    box-shadow: 0 8px 20px rgba(29, 79, 134, 0.3);
}

#btn_login:hover i {
    transform: translateX(3px);
}

#btn_login:disabled {
    opacity: 0.7;
}

.login-nota {
    display: flex;
    gap: 0.5rem;
    margin: 1.75rem 0 0;
    padding-top: 1.25rem;
    border-top: 1px solid #edf1f6;
    font-size: 0.82rem;
    color: var(--login-texto-suave);
}

/* ---------------------------------------------------------------- campos */
.form-floating-custom {
    position: relative;
}

.form-floating-custom .form-control {
    height: 58px;
    padding-left: 50px;
    padding-right: 50px;
    border: 1px solid var(--login-borde);
    border-radius: 10px;
    background-color: #f8fafc;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.form-floating-custom .form-control:focus {
    background-color: #FFFFFF;
    border-color: var(--login-primario);
    box-shadow: 0 0 0 0.22rem rgba(29, 79, 134, 0.15);
}

.form-floating-custom .form-control.is-invalid {
    border-color: #dc3545;
    background-image: none;
}

.form-floating-custom .form-control.is-invalid:focus {
    box-shadow: 0 0 0 0.22rem rgba(220, 53, 69, 0.15);
}

.form-floating-custom .form-control:focus ~ label,
.form-floating-custom .form-control:not(:placeholder-shown) ~ label {
    color: var(--login-primario);
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

.form-floating-custom .input-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    z-index: 5;
    font-size: 1.1rem;
    pointer-events: none;
}

.form-floating-custom:focus-within .input-icon {
    color: var(--login-primario);
}

.form-floating-custom label {
    padding-left: 50px;
    color: var(--login-texto-suave);
    font-weight: 500;
}

.form-floating-custom .password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: #94a3b8;
    z-index: 15;
    font-size: 1.2rem;
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.form-floating-custom .password-toggle:hover {
    color: var(--login-primario);
    background-color: rgba(29, 79, 134, 0.08);
}

/* ---------------------------------------------------------------- responsive */
@media (max-width: 860px) {
    .login-shell {
        grid-template-columns: 1fr;
        max-width: 520px;
        min-height: 0;
    }

    .login-brand {
        gap: 1rem;
        padding: 1.75rem 1.75rem 1.5rem;
    }

    .brand-body h1 {
        font-size: 1.6rem;
        margin: 0.75rem 0 0.25rem;
    }

    .brand-body > p {
        margin-bottom: 0;
    }

    .brand-lista {
        display: none;
    }

    .login-panel {
        padding: 2rem 1.75rem 2.25rem;
    }
}