* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary: #4361ee;
    --primary-light: #4895ef;
    --secondary: #3f37c9;
    --success: #4cc9f0;
    --danger: #f72585;
    --dark: #1e1e2c;
    --light: #f8f9fa;
    --gray: #6c757d;
    --shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --transition: all 0.3s ease;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 800px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.header {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    color: white;
    padding: 25px 30px;
    text-align: center;
}

.header h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.header p {
    opacity: 0.9;
    font-size: 0.95rem;
}

.progress-bar {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin: 30px 40px;
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 4px;
    width: 100%;
    background-color: #e0e0e0;
    z-index: 1;
}

.progress-bar-line {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 4px;
    width: 0%;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transition: var(--transition);
    z-index: 2;
}

.step {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: white;
    border: 3px solid #e0e0e0;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    color: var(--gray);
    position: relative;
    z-index: 3;
    transition: var(--transition);
}

.step.active {
    border-color: var(--primary);
    color: var(--primary);
    background: white;
    transform: scale(1.1);
}

.step.completed {
    border-color: var(--success);
    background: var(--success);
    color: white;
}

.step-label {
    position: absolute;
    top: 45px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    font-size: 0.8rem;
    color: var(--gray);
}

.step.active .step-label {
    color: var(--primary);
    font-weight: 600;
}

.form-container {
    padding: 20px 40px 40px;
}

.form-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-title {
    margin-bottom: 25px;
    color: var(--dark);
    font-size: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-light);
    outline: none;
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.checkbox-group input {
    width: 18px;
    height: 18px;
}

.checkbox-group label {
    margin-bottom: 0;
}

.btn-group {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.btn {
    padding: 12px 25px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-prev {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-prev:hover {
    background: #f0f4ff;
}

.btn-next, .btn-submit {
    background: var(--primary);
    color: white;
}

.btn-next:hover, .btn-submit:hover {
    background: var(--secondary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.success-container {
    text-align: center;
    padding: 50px 20px;
    display: none;
}

.success-container i {
    font-size: 4rem;
    color: var(--success);
    margin-bottom: 20px;
}

.success-container h2 {
    color: var(--dark);
    margin-bottom: 15px;
}

.success-container p {
    color: var(--gray);
    margin-bottom: 30px;
    line-height: 1.6;
}

.btn-restart {
    background: var(--primary);
    color: white;
    margin: 0 auto;
}

.error-message {
    color: var(--danger);
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
}

.input-with-icon {
    position: relative;
}

.input-with-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
}

.input-with-icon .form-control {
    padding-left: 45px;
}

.password-toggle {
    position: absolute;
    right: 50px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
    cursor: pointer;
}

@media (max-width: 768px) {
    .container {
        max-width: 100%;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .progress-bar {
        margin: 30px 20px;
    }
    
    .form-container {
        padding: 20px 25px 30px;
    }
    
    .step-label {
        display: none;
    }
}