/* =============================================
   PILAY - Página de Login
   ============================================= */

.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--pilay-primary-dark) 0%, var(--pilay-primary) 50%, var(--pilay-primary-light) 100%);
    position: relative;
    overflow: hidden;
    padding: 1rem;
}

/* Patrón de fondo animado */
.login-screen::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: drift 60s linear infinite;
    pointer-events: none;
}

@keyframes drift {
    from { transform: translate(0, 0); }
    to { transform: translate(-50%, -50%); }
}

/* Tarjeta de login */
.login-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl), 0 0 80px rgba(0, 166, 80, 0.15);
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (min-width: 768px) {
    .login-card {
        padding: 3rem;
    }
}

/* Logo y título */
.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--pilay-primary), var(--pilay-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

/* Formulario */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.login-form .form-input {
    padding: 1rem 1.25rem;
}

.login-form .btn {
    width: 100%;
    padding: 1rem;
}

/* Mensaje de error */
.login-error {
    background: var(--error-bg);
    border: 1px solid #fecaca;
    color: var(--error);
    padding: 0.875rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    display: none;
    animation: shake 0.5s ease;
}

.login-error.show {
    display: block;
}

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

/* Accesibilidad - skip link */
.login-skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--pilay-accent);
    color: white;
    padding: 0.5rem 1rem;
    z-index: 100;
}

.login-skip-link:focus {
    top: 0;
}