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

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.activation-wrapper {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.activation-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.logo h1 {
    color: #2c3e50;
    font-size: 1.5rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #34495e;
    font-weight: 500;
}

.input-group input {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn-activate {
    width: 100%;
    padding: 1rem;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-activate:hover {
    background: #764ba2;
    transform: translateY(-2px);
}

.message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    text-align: center;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

@media (max-width: 480px) {
    .activation-card {
        padding: 1.5rem;
    }
    
    .logo h1 {
        font-size: 1.3rem;
    }
}

/* Dodatni stilovi za login */
.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.input-group label i {
    margin-right: 8px;
    width: 20px;
}