:root {
    --naranja: #f5590aff;
    --naranja-oscuro: #d64709;
    --amarillo: #ffb703;
    --tinta: #1c1a17;
    --tinta-suave: #4a453f;
    --gris-borde: #e7e2da;
    --gris-fondo: #faf8f5;
    --blanco: #ffffff;
    --rojo-error: #d63b2f;
    --rojo-error-fondo: #fdeceb;
    --sombra: 0 20px 45px -20px rgba(28, 26, 23, 0.35);
    --radio: 14px;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: var(--tinta);
    background: var(--gris-fondo);
}

.pagina {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
}

/* ---------- Panel de marca ---------- */

.panel-marca {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 64px 56px;
    color: var(--blanco);
    background: linear-gradient(155deg, var(--naranja) 0%, var(--naranja-oscuro) 55%, #a83506 100%);
    box-shadow: 30px 0 70px -40px rgba(28, 26, 23, 0.45);
    overflow: hidden;
}

.panel-marca::before,
.panel-marca::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    background: var(--amarillo);
    opacity: 0.16;
}

.panel-marca::before {
    width: 420px;
    height: 420px;
    top: -140px;
    right: -160px;
}

.panel-marca::after {
    width: 260px;
    height: 260px;
    bottom: -100px;
    left: -80px;
    opacity: 0.1;
}

.panel-marca__contenido {
    position: relative;
    z-index: 1;
    max-width: 440px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 190px;
    height: 190px;
    margin-bottom: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 20px 45px -18px rgba(28, 26, 23, 0.5), inset 0 0 30px rgba(255, 255, 255, 0.25);
}

.logo__imagen {
    display: block;
    width: 62%;
    height: auto;
}

.panel-marca__titulo {
    font-size: 34px;
    line-height: 1.25;
    margin: 0 0 16px;
    font-weight: 700;
}

.panel-marca__descripcion {
    font-size: 16px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.88);
    margin: 0 0 32px;
}

.panel-marca__lista {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.panel-marca__lista li {
    position: relative;
    padding-left: 28px;
    font-size: 14.5px;
    color: rgba(255, 255, 255, 0.92);
}

.panel-marca__lista li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--amarillo);
    box-shadow: inset 0 0 0 3px rgba(28, 26, 23, 0.25);
}

/* ---------- Panel de formulario ---------- */

.panel-formulario {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 32px;
    background: var(--blanco);
}

.tarjeta-login {
    width: 100%;
    max-width: 380px;
}

.tarjeta-login__titulo {
    font-size: 26px;
    font-weight: 700;
    margin: 0 0 6px;
    color: var(--tinta);
}

.tarjeta-login__subtitulo {
    font-size: 14.5px;
    color: var(--tinta-suave);
    margin: 0 0 32px;
}

.formulario {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.campo {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.campo label {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--tinta);
}

.campo-etiqueta-fila {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.enlace-pequeno {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--naranja-oscuro);
    text-decoration: none;
}

.enlace-pequeno:hover {
    text-decoration: underline;
}

.campo input {
    width: 100%;
    padding: 13px 14px;
    font-size: 15px;
    border: 1.5px solid var(--gris-borde);
    border-radius: 10px;
    background: var(--gris-fondo);
    color: var(--tinta);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.campo input::placeholder {
    color: #b5aea3;
}

.campo input:focus {
    outline: none;
    border-color: var(--naranja);
    background: var(--blanco);
    box-shadow: 0 0 0 4px rgba(245, 89, 10, 0.12);
}

.campo input:user-invalid {
    border-color: var(--rojo-error);
}

.campo-password {
    position: relative;
}

.campo-password input {
    padding-right: 44px;
}

.boton-icono {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--tinta-suave);
    cursor: pointer;
}

.boton-icono:hover {
    background: var(--gris-fondo);
    color: var(--tinta);
}

.boton-icono svg {
    width: 20px;
    height: 20px;
}

.mensaje-error {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 11px 14px;
    border-radius: 10px;
    background: var(--rojo-error-fondo);
    color: var(--rojo-error);
    font-size: 13.5px;
    font-weight: 500;
}

.mensaje-error[hidden] {
    display: none;
}

.boton-primario {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 20px;
    margin-top: 6px;
    font-size: 15.5px;
    font-weight: 700;
    color: var(--blanco);
    background: linear-gradient(135deg, var(--naranja) 0%, var(--naranja-oscuro) 100%);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.15s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.15s cubic-bezier(0.16, 1, 0.3, 1), filter 0.12s ease;
    box-shadow: 0 10px 24px -10px rgba(245, 89, 10, 0.65);
}

.boton-primario:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px -12px rgba(245, 89, 10, 0.75);
}

.boton-primario:active {
    transform: translateY(0);
    filter: brightness(0.96);
}

.boton-primario:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.boton-primario__spinner {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: var(--blanco);
    animation: girar 0.7s linear infinite;
}

.boton-primario__spinner[hidden] {
    display: none;
}

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

.mensaje-exito {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px;
    border-radius: 10px;
    background: #eaf7ee;
    color: #1c7a3c;
    font-size: 14.5px;
    font-weight: 600;
    margin: 0;
}

.enlace-alterno {
    margin-top: 22px;
    text-align: center;
    font-size: 13.5px;
}

.enlace-alterno a {
    color: var(--naranja-oscuro);
    font-weight: 600;
    text-decoration: none;
}

.enlace-alterno a:hover {
    text-decoration: underline;
}

.pie {
    margin-top: 28px;
    font-size: 12.5px;
    color: var(--tinta-suave);
    text-align: center;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    .pagina {
        grid-template-columns: 1fr;
    }

    .panel-marca {
        padding: 48px 32px;
    }

    .panel-marca__titulo {
        font-size: 26px;
    }

    .panel-marca__lista {
        display: none;
    }
}

@media (max-width: 480px) {
    .panel-marca {
        padding: 40px 24px;
    }

    .panel-formulario {
        padding: 40px 24px;
    }
}