body {
    background: linear-gradient(135deg, #2c847e 0%, #1e5955 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.register-container {
    background: rgba(255, 255, 255, 0.92);
    border-radius: 30px;
    box-shadow: 0 25px 60px rgba(44, 132, 126, 0.18), 0 2px 8px rgba(30, 89, 85, 0.08);
    padding: 2.8rem 2.5rem;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    backdrop-filter: blur(8px) saturate(120%);
    animation: fadeInCard 1.1s cubic-bezier(.39,.575,.56,1) both;
}
@keyframes fadeInCard {
    0% { opacity: 0; transform: translateY(40px) scale(0.98); }
    100% { opacity: 1; transform: none; }
}
.register-header {
    text-align: center;
    margin-bottom: 2.2rem;
}
.platform-logo {
    width: 100px;
    height: 100px;
    object-fit: contain;
    display: block;
    margin: 0 auto 1.5rem auto;
    filter: drop-shadow(0 4px 16px rgba(30, 89, 85, 0.13));
    border-radius: 18px;
    background: rgb(255 255 255);
    padding: 8px;
}
.logo {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #2c847e 0%, #1e5955 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}
.platform-icon {
    width: 70px;
    height: 70px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    filter: drop-shadow(0 2px 8px rgba(44, 132, 126, 0.18));
    border-radius: 50%;
    background: #fff;
    padding: 8px;
}
.logo i {
    font-size: 2.5rem;
    color: white;
}
.register-header h1 {
    color: #2c847e;
    font-size: 2.1rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}
.register-header p {
    color: #718096;
    font-size: 1.08rem;
    margin-bottom: 0;
}
.step-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2.2rem;
    gap: 0.5rem;
}
.step {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #e2e8f0;
    color: #718096;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(44, 132, 126, 0.08);
    transition: all 0.3s;
}
.step.active {
    background: linear-gradient(135deg, #2c847e 0%, #1e5955 100%);
    color: #fff;
    box-shadow: 0 4px 16px rgba(44, 132, 126, 0.18);
}
.step.completed {
    background: #2c847e;
    color: #fff;
}
.step-line {
    flex: 0 1 80px;
    height: 3px;
    background: #e2e8f0;
    border-radius: 2px;
    transition: all 0.3s;
}
.step-line.active {
    background: linear-gradient(90deg, #2c847e 0%, #1e5955 100%);
}
.form-group {
    margin-bottom: 1.3rem;
    position: relative;
}
.form-label {
    display: block;
    color: #1e5955;
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.form-control {
    width: 100%;
    padding: 1rem 1.2rem 1rem 3rem;
    border: 2px solid #e2e8f0;
    border-radius: 14px;
    font-size: 1.05rem;
    color: #2d3748;
    background: #f8fafc;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(44, 132, 126, 0.04);
}
.form-control:focus {
    border-color: #2c847e;
    box-shadow: 0 0 0 4px rgba(44, 132, 126, 0.13);
    outline: none;
    background: #fff;
}
.form-icon {
    position: absolute;
    left: 1.1rem;
    top: 3.2rem;
    color: #2c847e;
    font-size: 1.15rem;
    z-index: 2;
    transition: all 0.3s;
}
.form-group:focus-within .form-icon {
    color: #1e5955;
    transform: scale(1.1);
}
.password-toggle {
    position: absolute;
    right: 1.1rem;
    top: 2.7rem;
    color: #2c847e;
    cursor: pointer;
    font-size: 1.15rem;
    transition: all 0.3s;
    padding: 5px;
}
.password-toggle:hover {
    color: #1e5955;
    transform: scale(1.1);
}
.optional {
    color: #a0aec0;
    font-size: 0.95rem;
    font-weight: normal;
    margin-left: 0.3rem;
}
.btn-next {
    background: linear-gradient(135deg, #2c847e 0%, #1e5955 100%);
    color: white;
    border: none;
    border-radius: 14px;
    padding: 0.95rem 2.2rem;
    font-size: 1.08rem;
    font-weight: 600;
    width: auto;
    min-width: 130px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(44, 132, 126, 0.13);
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}
.btn-next:hover {
    background: linear-gradient(135deg, #1e5955 0%, #2c847e 100%);
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 8px 24px rgba(44, 132, 126, 0.22);
}
.btn-prev {
    background: #718096;
    margin-right: 1rem;
}
.navigation-buttons {
    display: flex;
    justify-content: flex-end;
    margin-top: 2.2rem;
}
.row {
    display: flex;
    flex-wrap: wrap;
    margin: -8px;
}
.col-6 {
    flex: 0 0 50%;
    padding: 8px;
}
.col-12 {
    flex: 0 0 100%;
    padding: 8px;
}
.step-container {
    display: none;
}
.step-container.active {
    display: block;
}
#toast-container > div {
    opacity: 1;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    padding: 15px 20px;
    font-family: 'Poppins', sans-serif;
}
.toast-error {
    background-color: #f56565;
}
.toast-success {
    background-color: #48bb78;
}
.toast-info {
    background-color: #2c847e;
}
.text-center.mt-4 {
    border-top: 1px solid #e2e8f0;
    padding-top: 1.5rem;
    margin-top: 2rem !important;
}
.text-center.mt-4 p {
    font-size: 1rem;
    color: #4a5568;
    margin-bottom: 0.5rem;
}
.text-center.mt-4 a {
    color: #667eea !important;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}
.text-center.mt-4 a:hover {
    color: #764ba2 !important;
    transform: translateY(-1px);
}
.text-center.mt-4 a::after {
    content: " →";
    display: inline-block;
    transition: transform 0.3s ease;
}
.text-center.mt-4 a:hover::after {
    transform: translateX(3px);
}
.text-center.mt-4 .login-link {
    color: #2c847e !important;
    font-weight: 700;
    text-decoration: none;
    font-size: 1.08rem;
    transition: all 0.3s;
    position: relative;
    display: inline-block;
}
.text-center.mt-4 .login-link::after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background: #1e5955;
    transition: width 0.3s;
    position: absolute;
    left: 0;
    bottom: -2px;
}
.text-center.mt-4 .login-link:hover {
    color: #1e5955 !important;
}
.text-center.mt-4 .login-link:hover::after {
    width: 100%;
}
.text-center.mt-4 .login-link::before {
    content: '';
    display: inline-block;
    margin-right: 0.2em;
}
.text-center.mt-4 .login-link::after {
    content: '';
}
.text-center.mt-4 .login-link:hover::after {
    content: ' →';
    color: #1e5955;
    width: auto;
    display: inline-block;
    margin-left: 0.2em;
    background: none;
    height: auto;
    position: static;
}

/* Responsive styles */
@media (max-width: 900px) {
    .register-container {
        padding: 1.5rem 0.7rem;
        border-radius: 20px;
    }
    .col-6 {
        flex: 0 0 100%;
    }
    .step-line {
        flex: 0 1 40px;
    }
}