/* ── Portal del Profesor y logins ──
   Los colores corporativos (--marca-*) se definen en css/marca.css. */
:root {
    --portal-bg: #f4f5f7;
    --portal-text-muted: #6c757d;
}

.btn-portal-primary {
    background: linear-gradient(135deg, var(--marca-principal), var(--marca-claro));
    border: none;
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: filter 0.15s ease, box-shadow 0.15s ease;
}

.btn-portal-primary:hover,
.btn-portal-primary:focus {
    background: linear-gradient(135deg, var(--marca-hover), var(--marca-hover-claro));
    color: #fff;
    box-shadow: 0 4px 14px rgba(var(--marca-principal-rgb), 0.35);
}

.btn-portal-primary:disabled {
    background: linear-gradient(135deg, #9ca3af, #b0b7bf);
    color: #fff;
}

.btn-portal-outline {
    background: transparent;
    border: 1px solid rgba(var(--marca-principal-rgb), 0.3);
    color: var(--marca-principal);
    font-weight: 500;
    transition: background 0.15s ease, color 0.15s ease;
}

.btn-portal-outline:hover,
.btn-portal-outline:focus {
    background: var(--marca-principal);
    border-color: var(--marca-principal);
    color: #fff;
}

.portal-form-control:focus {
    border-color: var(--marca-claro);
    box-shadow: 0 0 0 0.2rem rgba(var(--marca-claro-rgb), 0.18);
}

/* ── Tarjeta de login (usada en /login y /login-profesor) ── */
.login-wrap {
    flex: 1;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.login-card {
    width: 100%;
    max-width: 380px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(var(--marca-oscuro-rgb), 0.12);
    padding: 2.25rem 2rem;
}

.login-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin: 0 auto 1.1rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--marca-principal), var(--marca-claro));
    color: #fff;
    font-size: 1.6rem;
}

.login-card-icon-img {
    display: block;
    width: 44px;
    height: 44px;
    object-fit: contain;
}

.login-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    text-align: center;
    color: #212529;
    margin-bottom: 0.25rem;
}

.login-card-subtitle {
    text-align: center;
    color: var(--portal-text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.75rem;
}