:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --light-bg: #f8f9ff;
    --card-shadow: 0 20px 40px rgba(0,0,0,0.1);
    --border-radius: 20px;
}

body {
    background: var(--light-bg);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(240, 147, 251, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(102, 126, 234, 0.1) 0%, transparent 50%);
}

.register-container {
    width: 100%;
    max-width: 450px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(255, 255, 255, 0.2);
    overflow: hidden;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.register-header {
    background: var(--secondary-gradient);
    color: white;
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
}

.register-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="register-pattern" width="25" height="25" patternUnits="userSpaceOnUse"><circle cx="12.5" cy="12.5" r="1.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23register-pattern)"/></svg>');
    pointer-events: none;
}

.register-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.register-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.register-subtitle {
    opacity: 0.9;
    margin-bottom: 0;
}

.register-form {
    padding: 2.5rem;
}

.form-group-elegant {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-label-elegant {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    display: block;
    font-size: 0.95rem;
}

.form-control-elegant {
    border: 2px solid #e1e8ed;
    border-radius: 12px;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fafbfc;
    width: 100%;
}

.form-control-elegant:focus {
    border-color: #f5576c;
    box-shadow: 0 0 0 3px rgba(245, 87, 108, 0.1);
    background: white;
    outline: none;
}

.form-control-elegant::placeholder {
    color: #adb5bd;
}

.input-icon {
    position: absolute;
    right: 1rem;
    top: 65%;
    transform: translateY(-50%);
    color: #f5576c;
    font-size: 1.1rem;
    opacity: 0.7;
}

.password-strength {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #6c757d;
}

.password-strength.weak {
    color: #dc3545;
}

.password-strength.medium {
    color: #ffc107;
}

.password-strength.strong {
    color: #28a745;
}

.error-message {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-register-elegant {
    background: var(--secondary-gradient);
    border: none;
    border-radius: 12px;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    width: 100%;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-register-elegant::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s;
}

.btn-register-elegant:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(245, 87, 108, 0.3);
}

.btn-register-elegant:hover::before {
    left: 100%;
}

.login-link {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #e1e8ed;
}

.login-link-text {
    color: #6c757d;
    margin-bottom: 1rem;
}

.btn-login-link {
    background: var(--primary-gradient);
    border: none;
    border-radius: 25px;
    padding: 0.75rem 2rem;
    font-weight: 600;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-login-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    color: white;
    text-decoration: none;
}

.alert-elegant {
    border: none;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.alert-elegant::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: currentColor;
}

.terms-text {
    font-size: 0.85rem;
    color: #6c757d;
    text-align: center;
    margin-top: 1rem;
}

@media (max-width: 480px) {
    .register-container {
        margin: 1rem;
    }

    .register-header {
        padding: 2rem 1.5rem;
    }

    .register-form {
        padding: 2rem 1.5rem;
    }
}