:root {
    --login-amarillo: #F0B323;
    --login-amarillo-hover: #E0A515;
    --login-amarillo-claro: #FFF4D6;
    --login-texto: #111827;
    --login-texto-sec: #4B5563;
    --login-placeholder: #9CA3AF;
    --login-borde: #E5E7EB;
    --login-rojo: #DC2626;
    --login-verde: #4ADE5A;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: #fff;
    font-family: 'Inter', sans-serif;
    color: var(--login-texto);
}

.login_card {
    width: 100%;
    max-width: 400px;
    padding: 36px 40px 44px;
    border: 1px solid var(--login-borde);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
}

/* banner con el logo */
.login_banner {
    position: relative;
    height: 84px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px 14px 0 0;
    background: linear-gradient(115deg, var(--login-amarillo-claro) 55%, #FFFBEF 55%);
    overflow: hidden;
}

.login_logo {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.login_logo span { color: var(--login-amarillo); }

.login_banner_linea {
    position: absolute;
    bottom: 8px;
    height: 1.5px;
    width: 33%;
}

.login_banner_linea.izq { left: 14px; background: var(--login-texto); }
.login_banner_linea.der { right: 14px; background: var(--login-amarillo); }

/* pasos del flujo */
.login_paso { display: none; }
.login_paso.activo {
    display: block;
    animation: paso_entrada .35s ease;
}

.login_titulo {
    margin-top: 18px;
    text-align: center;
    font-size: 26px;
    font-weight: 800;
}

.login_subtitulo {
    margin: 10px 0 28px;
    text-align: center;
    font-size: 14px;
    color: var(--login-texto-sec);
}

/* inputs */
.login_label {
    display: block;
    margin-bottom: 7px;
    font-size: 13px;
    font-weight: 600;
    color: var(--login-texto-sec);
}

.login_input {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 42px;
    margin-bottom: 14px;
    padding: 0 10px;
    border: 1px solid var(--login-borde);
    border-radius: 8px;
    transition: border-color .15s, box-shadow .15s;
}

.login_input:focus-within {
    border-color: var(--login-amarillo);
    box-shadow: 0 0 0 3px rgba(240, 179, 35, 0.18);
}

.login_input svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--login-texto-sec);
}

.login_input input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    font: inherit;
    font-size: 13px;
    color: var(--login-texto);
}

.login_input input::placeholder { color: var(--login-placeholder); }

.login_ver_password {
    display: flex;
    border: none;
    background: none;
    cursor: pointer;
}

/* cajas del código OTP */
.login_otp {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 24px;
}

.login_otp_caja {
    width: 100%;
    min-width: 0;
    aspect-ratio: 1 / 1.05;
    border: 1px solid var(--login-borde);
    border-radius: 8px;
    background: #F3F4F6;
    outline: none;
    text-align: center;
    font: inherit;
    font-size: 17px;
    font-weight: 500;
    color: var(--login-texto);
    caret-color: var(--login-amarillo);
    transition: border-color .15s, background .15s;
}

.login_otp_caja::placeholder { color: var(--login-placeholder); }

.login_otp_caja:focus {
    border: 1.5px solid var(--login-amarillo);
    background: #fff;
}

/* error */
.login_otp_caja.invalido,
.login_input.invalido,
.login_input.invalido:focus-within {
    border-color: var(--login-rojo);
    box-shadow: none;
}

.login_error {
    margin: 10px 0 24px;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--login-rojo);
}

.login_error:empty { display: none; }

.login_otp + .login_error { margin-top: -10px; font-size: 12px; }

.login_otp_caja.invalido { border-width: 1.5px; }

/* código correcto */
.login_otp_caja.valido {
    border: 1.5px solid var(--login-verde);
    background: #F3F4F6;
}

.login_error.exito {
    font-weight: 400;
    color: var(--login-verde);
}

/* botones */
.login_btn_principal {
    width: 100%;
    height: 46px;
    border: none;
    border-radius: 8px;
    background: var(--login-amarillo);
    box-shadow: 0 6px 14px rgba(17, 24, 39, 0.15);
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    color: var(--login-texto);
    cursor: pointer;
    transition: background .15s;
}

a.login_btn_principal {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.login_btn_principal:hover { background: var(--login-amarillo-hover); }

.login_btn_principal:disabled {
    opacity: .6;
    cursor: wait;
}

/* spinner del botón mientras carga */
.login_btn_principal.cargando {
    position: relative;
    color: transparent;
    opacity: 1;
}

.login_btn_principal.cargando::after {
    content: '';
    position: absolute;
    inset: 0;
    width: 18px;
    height: 18px;
    margin: auto;
    border: 2px solid rgba(17, 24, 39, 0.25);
    border-top-color: var(--login-texto);
    border-radius: 50%;
    animation: girar .7s linear infinite;
}

.login_link {
    display: block;
    margin: 16px auto 0;
    border: none;
    background: none;
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    color: var(--login-texto-sec);
    cursor: pointer;
}

.login_link:hover { color: var(--login-texto); text-decoration: underline; }

.login_link_separado { margin-top: 40px; }

/* opciones de envío de código */
.login_opciones {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.login_opcion {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    height: 42px;
    padding: 0 16px;
    border: 1px solid var(--login-amarillo);
    border-radius: 8px;
    background: var(--login-amarillo-claro);
    box-shadow: 0 6px 14px rgba(17, 24, 39, 0.12);
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    color: var(--login-texto);
    text-align: left;
    cursor: pointer;
    transition: background .15s;
}

.login_opcion:hover { background: #FFEBB3; }

.login_opcion:disabled {
    opacity: .6;
    cursor: wait;
}

.login_opcion svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* contraseña cambiada */
.login_exito_icono {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 84px;
    height: 84px;
    margin: 0 auto 28px;
    border-radius: 50%;
    background: #EEFBEF;
    color: var(--login-verde);
}

.login_exito_icono svg {
    width: 32px;
    height: 32px;
}

.login_exito_icono.fallo {
    background: #FDE8E8;
    color: var(--login-rojo);
}

.login_texto_rojo { color: var(--login-rojo); }

/* efectos */
.login_card { animation: tarjeta_entrada .45s ease; }

.sacudir { animation: sacudida .4s ease; }

.login_exito_icono { animation: pop .45s cubic-bezier(.34, 1.56, .64, 1); }
.login_exito_icono svg { animation: pop .35s cubic-bezier(.34, 1.56, .64, 1) .2s backwards; }

.login_otp_caja.valido { animation: pop .35s cubic-bezier(.34, 1.56, .64, 1) backwards; }
.login_otp_caja.valido:nth-child(2) { animation-delay: .05s; }
.login_otp_caja.valido:nth-child(3) { animation-delay: .1s; }
.login_otp_caja.valido:nth-child(4) { animation-delay: .15s; }
.login_otp_caja.valido:nth-child(5) { animation-delay: .2s; }
.login_otp_caja.valido:nth-child(6) { animation-delay: .25s; }

.login_error.exito { animation: paso_entrada .3s ease; }

@keyframes tarjeta_entrada {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes paso_entrada {
    from { opacity: 0; transform: translateX(14px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes sacudida {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

@keyframes pop {
    from { opacity: 0; transform: scale(.5); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes girar {
    to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        animation-delay: 0s !important;
    }
}