/**
 * Login — Transporte MTK
 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
    border-radius: 50%;
    top: -200px;
    right: -200px;
}

.login-container {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    max-width: 440px;
    width: 100%;
    position: relative;
    z-index: 1;
    animation: loginFadeIn 0.4s ease-out;
}

@keyframes loginFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 2rem;
    text-align: center;
}

.login-header .company-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 1rem;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.login-header .company-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

.login-header h1 {
    font-size: var(--font-size-xl);
    margin-bottom: 0.35rem;
}

.login-header p {
    opacity: 0.9;
    font-size: var(--font-size-sm);
}

.login-body {
    padding: 2rem;
}

.login-body .form-group {
    margin-bottom: 1.25rem;
}

.login-body label {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--gray-700);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.login-body input {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
}

.login-body input:focus {
    outline: none;
    border-color: var(--mtk-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.12);
}

.btn-login {
    width: 100%;
    padding: 0.9rem;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-login:hover {
    opacity: 0.95;
    transform: translateY(-1px);
}

.login-back {
    text-align: center;
    margin-top: 1.25rem;
}

.login-back a {
    color: var(--mtk-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.login-back a:hover {
    text-decoration: underline;
}

.login-alert {
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.login-alert-success { background: #d1fae5; color: #065f46; }
.login-alert-danger { background: #fee2e2; color: #991b1b; }
.login-alert-warning { background: #fef3c7; color: #92400e; }