/* ============================================================================
   PandaNexo Posadas — AUTENTICACIÓN
   Móvil: una sola columna, el formulario ocupa la pantalla como en una app.
   Escritorio: dos paneles, marca a la izquierda y acceso a la derecha.
   ============================================================================ */

body.auth-body {
    min-height: 100dvh;
    background-color: var(--surface);
}

.auth-shell {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 100dvh;
}

@media (min-width: 992px) {
    .auth-shell {
        grid-template-columns: 1.05fr 1fr;
    }
}

/* ============================================================================
   PANEL DE MARCA (escritorio)
   ============================================================================ */
.auth-brand-panel {
    display: none;
    position: relative;
    align-items: center;
    padding: var(--sp-16) var(--sp-12);
    background: var(--gradient-brand);
    color: #FFFFFF;
    overflow: hidden;
}

@media (min-width: 992px) {
    .auth-brand-panel {
        display: flex;
    }
}

/* Texturas suaves: palmas y arena. */
.auth-brand-panel::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -15%;
    width: 60%;
    aspect-ratio: 1;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.18) 0%, transparent 70%);
}

.auth-brand-panel::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse at 30% 40%, #000 0%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse at 30% 40%, #000 0%, transparent 78%);
}

.auth-brand-inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--sp-8);
    max-width: 30rem;
}

.auth-brand-mark {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
}

.auth-brand-icon {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: var(--r-md);
    background-color: rgba(255, 255, 255, 0.18);
    font-size: var(--text-2xl);
}

.auth-brand-name {
    font-family: var(--font-seal);
    font-size: var(--text-2xl);
    font-weight: var(--fw-bold);
    letter-spacing: var(--ls-wide);
}

.auth-brand-name em { font-style: normal; opacity: 0.8; }

.auth-brand-claim {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: var(--fw-bold);
    line-height: var(--lh-tight);
    color: #FFFFFF;
}

.auth-brand-claim em { font-style: italic; }

.auth-brand-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
    list-style: none;
    padding: 0;
}

.auth-brand-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.92);
}

.auth-brand-list i {
    margin-top: 4px;
    flex-shrink: 0;
    color: rgba(255, 255, 255, 0.7);
}

.auth-brand-foot {
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-wide);
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================================================
   PANEL DEL FORMULARIO
   ============================================================================ */
.auth-form-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--safe-t) + var(--sp-8)) max(var(--gutter), var(--safe-l)) calc(var(--safe-b) + var(--sp-8));
}

.auth-card {
    display: flex;
    flex-direction: column;
    gap: var(--sp-6);
    width: 100%;
    max-width: 26rem;
}

@media (min-width: 992px) {
    .auth-card {
        padding: var(--sp-8);
        border: 1px solid var(--outline);
        border-radius: var(--r-2xl);
        background-color: var(--surface-1);
        box-shadow: var(--el-3);
    }
}

.auth-head {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
    text-align: center;
}

.auth-logo {
    display: grid;
    place-items: center;
    width: 60px;
    height: 60px;
    margin: 0 auto var(--sp-2);
    border-radius: var(--r-lg);
    background: var(--gradient-brand);
    color: #FFFFFF;
    font-size: var(--text-3xl);
    box-shadow: var(--el-primary);
}

@media (min-width: 992px) {
    .auth-logo {
        display: none;
    }
    .auth-head {
        text-align: left;
    }
}

.auth-title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--fw-bold);
    color: var(--on-surface-strong);
}

.auth-sub {
    font-size: var(--text-md);
    line-height: var(--lh-relaxed);
    color: var(--on-surface-muted);
}

.auth-alert {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-4);
    border: 1px solid transparent;
    border-left-width: 4px;
    border-radius: var(--r-md);
    font-size: var(--text-md);
    font-weight: var(--fw-medium);
    animation: auth-shake var(--dur-slower) var(--ease-standard);
}

.auth-alert i {
    font-size: var(--text-xl);
    flex-shrink: 0;
}

.auth-alert-danger {
    background-color: var(--danger-container);
    border-color: var(--danger);
    color: var(--on-danger-container);
}

@keyframes auth-shake {
    0%, 100% { transform: translateX(0); }
    20%      { transform: translateX(-5px); }
    40%      { transform: translateX(5px); }
    60%      { transform: translateX(-3px); }
    80%      { transform: translateX(3px); }
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--sp-5);
}

.auth-password {
    position: relative;
}

.auth-password .ui-input {
    padding-right: 52px;
}

.auth-eye {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: var(--r-full);
    background: none;
    color: var(--on-surface-muted);
    font-size: var(--text-md);
    cursor: pointer;
    transition: background-color var(--tr-fast), color var(--tr-fast);
}

.auth-eye:hover {
    background-color: var(--state-hover);
    color: var(--primary);
}

.auth-submit {
    margin-top: var(--sp-1);
}

.auth-demo {
    margin-top: var(--sp-2);
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--r-md);
    background-color: var(--primary-container);
    color: var(--on-primary-container);
    font-size: var(--text-sm);
    text-align: center;
}

.auth-demo code {
    font-family: var(--font-mono);
    font-weight: var(--fw-bold);
}

.auth-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-3);
    flex-wrap: wrap;
    padding-top: var(--sp-4);
    border-top: 1px solid var(--outline);
}

.auth-back {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    min-height: 40px;
    font-size: var(--text-md);
    font-weight: var(--fw-bold);
    color: var(--primary);
}

.auth-back:hover {
    text-decoration: underline;
}

.auth-version {
    font-size: var(--text-xs);
    color: var(--on-surface-faint);
}

/* ============================================================================
   BOTÓN DE TEMA FLOTANTE
   ============================================================================ */
.auth-theme-btn {
    position: fixed;
    top: calc(var(--safe-t) + var(--sp-4));
    right: calc(var(--safe-r) + var(--sp-4));
    z-index: var(--z-sticky);
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--outline);
    border-radius: var(--r-full);
    background-color: var(--surface-1);
    color: var(--on-surface-variant);
    font-size: var(--text-lg);
    cursor: pointer;
    box-shadow: var(--el-1);
    transition: background-color var(--tr-fast), color var(--tr-fast), transform var(--dur-fast) var(--ease-standard);
}

.auth-theme-btn:hover {
    background-color: var(--primary-container);
    color: var(--primary);
}

.auth-theme-btn:active {
    transform: scale(0.92);
}