:root {
    --primary-color: #06ffa5; /* Bright green */
    --primary-dark: #00b871; /* Darker green */
    --secondary-color: #00c735; /* Blue accent */
    --error-color: #f72585;
    --success-color: #06ffa5;
    --warning-color: #ffbe0b;
    --dark-color: #2b2d42;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #e6f7ef 0%, #d1f2eb 100%); /* Light green background */
    color: var(--dark-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.register-container {
    width: 100%;
    max-width: 450px;
}

.register-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.register-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.register-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 30px 25px;
    text-align: center;
}

.register-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 5px;
}

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

.register-form {
    padding: 30px 25px;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark-color);
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 15px;
    color: var(--gray-color);
    font-size: 1.1rem;
}

.input-group input {
    width: 100%;
    padding: 14px 15px 14px 45px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

.input-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(6, 255, 165, 0.2);
    outline: none;
}

.toggle-password {
    position: absolute;
    right: 15px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--gray-color);
}

.password-strength {
    margin-top: 8px;
}

.strength-bar {
    height: 4px;
    background-color: #e9ecef;
    border-radius: 2px;
    margin-bottom: 5px;
}

.strength-indicator {
    height: 100%;
    width: 0;
    border-radius: 2px;
    background-color: var(--gray-color);
    transition: var(--transition);
}

.strength-text {
    font-size: 0.85rem;
    color: var(--gray-color);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
}

.checkbox-group input {
    margin-right: 8px;
    margin-top: 4px;
}

.checkbox-group label {
    font-weight: 500;
    margin-bottom: 0;
}

.checkbox-group a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.checkbox-group a:hover {
    text-decoration: underline;
}

.btn-register {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--dark-color);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(6, 255, 165, 0.4);
}

.btn-register:active {
    transform: translateY(0);
}

.login-link {
    text-align: center;
    margin-top: 20px;
    font-size: 0.95rem;
    color: var(--gray-color);
}

.login-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

.security-notice {
    background-color: #e6f7ef;
    padding: 15px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--primary-dark);
    border-top: 1px solid #d1f2eb;
}

.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.alert-error {
    background-color: #fff0f0;
    color: var(--error-color);
    border-left: 4px solid var(--error-color);
}

.alert-success {
    background-color: #f0fff4;
    color: var(--primary-dark);
    border-left: 4px solid var(--primary-color);
}

.alert-icon {
    margin-right: 10px;
    font-size: 1.2rem;
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .register-container {
        max-width: 100%;
    }
    
    .register-header {
        padding: 25px 20px;
    }
    
    .register-form {
        padding: 25px 20px;
    }
    
    .register-header h1 {
        font-size: 1.6rem;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}