/* =====================================================================
   SGI - Estilos para pantallas de autenticación (login, cambio password)
   Marcador: [B7-CUA-PALETA-V1] · Estrategia B · Marca fuerte
   Paleta institucional: Gris #404040 + Amarillo #EDE709
   Fecha: 30 de abril de 2026
   ===================================================================== */

/* =====================================================================
   TOKENS DE DISEÑO INSTITUCIONALES CUA
   Centralizados aquí para permitir cambios futuros con un solo edit.
   ===================================================================== */

:root {
    /* === Paleta cruda de marca === */
    --cua-gris:               #404040;
    --cua-gris-oscuro:        #2D2D2D;
    --cua-amarillo:           #EDE709;
    --cua-amarillo-hover:     #D4CE08;
    --cua-amarillo-suave:     #FFFCE8;
    --cua-amarillo-borde:     rgba(237, 231, 9, 0.35);

    /* === Tokens semánticos === */
    --color-primary:          var(--cua-gris);
    --color-primary-hover:    var(--cua-gris-oscuro);
    --color-on-primary:       #FFFFFF;
    --color-accent:           var(--cua-amarillo);
    --color-accent-hover:     var(--cua-amarillo-hover);
    --color-on-accent:        #1A1A1A;

    /* === Neutros === */
    --color-bg:               #f4f6fa;
    --color-surface:          #FFFFFF;
    --color-surface-alt:      #fafbfd;
    --color-border:           #e1e6ee;
    --color-border-strong:    #d1d6e0;
    --color-text:             #1a1f2e;
    --color-text-muted:       #5a6478;
    --color-text-soft:        #6b7280;

    /* === Estados === */
    --color-success-bg:       #e2efda;
    --color-success-text:     #1b5e20;
    --color-success-border:   #1b7f4d;
    --color-error-bg:         #fce4d6;
    --color-error-text:       #8b0000;
    --color-error-border:     #b22222;
}

.auth-body {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--cua-gris) 0%, var(--cua-gris-oscuro) 100%);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    position: relative;
    overflow-x: hidden;
}

/* Acento de marca: barra amarilla diagonal sutil en el fondo */
.auth-body::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 350px;
    height: 350px;
    background: var(--cua-amarillo);
    opacity: 0.06;
    border-radius: 50%;
    filter: blur(40px);
    pointer-events: none;
}
.auth-body::after {
    content: '';
    position: absolute;
    bottom: -15%;
    left: -8%;
    width: 280px;
    height: 280px;
    background: var(--cua-amarillo);
    opacity: 0.04;
    border-radius: 50%;
    filter: blur(40px);
    pointer-events: none;
}

.auth-shell {
    width: 100%;
    max-width: 460px;
    position: relative;
    z-index: 1;
}

.auth-card {
    background: var(--color-surface);
    border-radius: 12px;
    padding: 40px 36px;
    box-shadow: 0 24px 48px rgba(0, 0, 0, .25);
    border-top: 6px solid var(--color-accent);
}

.auth-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}
.auth-brand-text { display: flex; flex-direction: column; gap: 2px; }
.auth-brand-name { font-weight: 700; font-size: 14.5px; color: var(--color-primary); line-height: 1.3; }
.auth-brand-sub  { font-size: 12.5px; color: var(--color-text-soft); }

.auth-title    { font-size: 22px; margin: 0 0 8px; color: var(--color-primary); font-weight: 700; }
.auth-subtitle { font-size: 14px; color: var(--color-text-muted); margin: 0 0 22px; line-height: 1.45; }

.auth-form { display: flex; flex-direction: column; gap: 16px; }

.auth-field { display: flex; flex-direction: column; gap: 6px; }
.auth-field label { font-size: 13px; font-weight: 600; color: #2c3548; }
.auth-field input {
    padding: 11px 14px;
    border: 1.5px solid var(--color-border-strong);
    border-radius: 8px;
    font-size: 14.5px;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-surface-alt);
    transition: border-color .15s, background .15s, box-shadow .15s;
}
.auth-field input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px var(--cua-amarillo-borde);
}

.auth-help-text {
    font-size: 12px;
    color: var(--color-text-soft);
    line-height: 1.4;
    margin-top: 2px;
}

/* === Botón primario · Estrategia B (amarillo institucional) === */
.auth-btn {
    padding: 12px 18px;
    border-radius: 8px;
    border: 2px solid transparent;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background .15s, transform .08s, box-shadow .15s;
}
.auth-btn-primary {
    background: var(--color-accent);
    color: var(--color-on-accent);
    border-color: var(--color-primary);
    margin-top: 8px;
    box-shadow: 0 2px 0 var(--color-primary);
}
.auth-btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 3px 0 var(--color-primary);
}
.auth-btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 0 var(--color-primary);
}

.auth-btn-secondary {
    background: #f1f3f7;
    color: #4a5468;
    width: 100%;
    border-color: var(--color-border-strong);
}
.auth-btn-secondary:hover {
    background: #e3e7ee;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.auth-form-secondary { margin-top: 14px; }

.auth-help {
    font-size: 12.5px;
    color: var(--color-text-soft);
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
    line-height: 1.5;
    text-align: center;
}

.auth-alert {
    padding: 12px 14px;
    border-radius: 8px;
    margin-bottom: 18px;
    font-size: 13.5px;
    font-weight: 500;
    line-height: 1.4;
}
.auth-alert-error   { background: var(--color-error-bg); color: var(--color-error-text); border-left: 4px solid var(--color-error-border); }
.auth-alert-success { background: var(--color-success-bg); color: var(--color-success-text); border-left: 4px solid var(--color-success-border); }

.auth-footer {
    text-align: center;
    color: rgba(255,255,255,.85);
    font-size: 12.5px;
    margin-top: 24px;
    position: relative;
    z-index: 1;
}

@media (max-width: 480px) {
    .auth-card { padding: 28px 22px; }
    .auth-title { font-size: 19px; }
    .auth-body::before, .auth-body::after { display: none; }
}