body {
    background: var(--gray-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 950px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.auth-left {
    background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
    padding: 50px 40px;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-left h1 {
    font-size: 26px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.auth-left h1 i {
    color: var(--accent);
}

.auth-left p {
    opacity: 0.9;
    margin-bottom: 25px;
    font-size: 15px;
}

.auth-left ul {
    list-style: none;
}

.auth-left ul li {
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.auth-left ul li i {
    color: var(--accent);
}

.auth-right {
    padding: 40px;
    max-height: 90vh;
    overflow-y: auto;
}

.auth-tabs {
    display: flex;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--gray-lighter);
}

.auth-tab {
    flex: 1;
    padding: 14px;
    text-align: center;
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    color: var(--gray);
    position: relative;
}

.auth-tab.active {
    color: var(--primary);
}

.auth-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
    border-radius: 3px 3px 0 0;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-section {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px dashed var(--gray-lighter);
}

.form-section h4 {
    font-size: 12px;
    color: var(--primary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.form-section h4 i {
    margin-right: 6px;
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    margin-bottom: 4px;
    font-weight: 500;
    color: var(--dark);
    font-size: 13px;
}

.form-group label span {
    color: var(--danger);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 11px 13px;
    border: 2px solid var(--gray-lighter);
    border-radius: 8px;
    font-family: inherit;
    font-size: 13px;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 12px;
}

.alert {
    padding: 14px 16px;
    border-radius: 10px;
    margin-bottom: 15px;
    font-weight: 500;
    font-size: 13px;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.btn-auth {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-auth:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(37, 99, 235, 0.3);
}

.forgot-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 13px;
}

.forgot-link:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .auth-container {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
    
    .auth-left {
        display: none;
    }
    
    .form-row-3 {
        grid-template-columns: 1fr 1fr;
    }
    
    .form-row-3 input:first-child {
        grid-column: 1 / -1;
    }
}