.auth-section {
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: #f8fafc;
    padding: 60px 0;
}
.auth-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    padding: 40px 36px;
    height: 100%;
    box-sizing: border-box;
}
.auth-row {
    display: flex;
    align-items: stretch;
    margin: 0 -12px;
}
.auth-col-half {
    flex: 0 0 50%;
    max-width: 50%;
    padding: 0 12px;
    box-sizing: border-box;
}
@media (max-width: 767px) {
    .auth-row { flex-direction: column; }
    .auth-col-half { max-width: 100%; flex: 0 0 100%; margin-bottom: 24px; }
}
.auth-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 6px;
}
.auth-card p.subtitle {
    color: #718096;
    font-size: 0.9rem;
    margin-bottom: 28px;
}
.auth-card .form-group {
    margin-bottom: 16px;
}
.auth-card label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 6px;
}
.auth-card input {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.9rem;
    color: #2d3748;
    outline: none;
    box-sizing: border-box;
    transition: border-color .2s;
}
.auth-card input:focus { border-color: #ff6818; }
.auth-card .btn-auth {
    width: 100%;
    padding: 12px;
    background: #ff6818;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    margin-top: 8px;
    transition: background .2s;
}
.auth-card .btn-auth:hover { background: #e55a0f; }
.auth-divider {
    display: none;
}
.alert-auth {
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.87rem;
    margin-bottom: 16px;
}
.alert-danger { background: #fff5f5; color: #c53030; border: 1px solid #fed7d7; }
@media (max-width: 767px) {
    .auth-col { margin-bottom: 30px; }
    .auth-col-divider {
        border-top: 2px dashed #e2e8f0;
        margin: 10px 0 30px;
    }
}